Shadowing Practice: 什麼是屏蔽罩(shielding can)？工程師對屏蔽罩的愛恨情仇 - Learn English Speaking with Video
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Hello, everyone.
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Welcome to the KOMGTUX The channel is a video.
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Today I want to talk to you about a video in the video.
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But there are a few people who will be introducing the material.
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The hidden camera.
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Shading cam.
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If you have been using the smartphone, Wi-Fi, LINEA module, the system, and even the medical equipment,
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you may have seen the in PCBs of some of the material on the It's a metal cover, especially in the middle of the system.
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This is a metal cover.
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But it's what's going on?
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Why many of the S&T scientists saw it, and they were always feeling pain?
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Why some of the RF companies often say some of these are not fair?
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Today, we'll from the design, to the design, and let's talk about the basic basic concepts and the basic concepts.
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First, let's look at the fact that the what is useful for the people?
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Most people think of the answer is to prevent the transmission of电池.
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This is not true.
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In the current technology, there may be Wi-Fi, Bluetooth, GPS, 4G, 5G, and NFC.
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And for the reason to get more quickly, all of the high-speed transmission signals will be more than ever.
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If you don't have these messages to be able to leave, they may be able to be affected by the other.
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For example, Wi-Fi may be affected by GPS.
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For the CPU, it may be affected by RF-less wireless wireless.
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At the end of the day, it may be a lot of confusion.
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So, the wireless wireless system will be easily affected or is an area of damage, using a silver-like surface to put it on.
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It's just to put the water to be locked inside, to prevent it from affecting others.
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And you can also put the information on the outside, to reduce the information of the virus.
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But many people don't know the fact that the surface is actually the second way, which is to increase PCB's machine power.
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Especially now PCB is more薄,
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like the computer's phone, mostly 1.0mm, some more薄, maybe 0.6mm.
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The size of the VGA equipment is not enough to be supported, if PCB is a bit more than a wide range, it will be easier to turn.
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Choose a full-on-one of the wall, and be able to support the space for the PCB.
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Just like PCBs on the other side, it can reduce PCBs of the surface of the surface
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and also protect the surface of the surface and the inside of the material
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So it can also be able to prevent the damage from the surface
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and can be achieved by the surface of the surface
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Why do you think S&T is afraid to have a surface of the surface?
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If you've worked on S&T's work, you probably know The only thing is that there are no problems.
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The most common problems are with the no-double.
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First, the only thing is that it is a very difficult problem.
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Second, the only thing is that it is a very difficult problem.
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Third, the only thing is that it is a very difficult problem.
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The last one is the surface of the surface.
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It is often a light.
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It is a light.
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Let's talk about the reason why the surface is the first.
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The first reason is because of the temperature.
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The surface is the原理.
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It is to use the surface to the surface to the surface.
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So the surface is the surface.
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and is a large-scale ground plant.
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In this situation, the回汗 if you choose RTS, which is the temperature of the temperature,
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the temperature of the temperature will give it a lower the heat of the heat.
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The result is that the heat is not bad, but the heat is not completely dissolved, and the heat is not completely dissolved,
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and the heat is not completely dissolved, or It's
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possible that it can completely melt, so it can be prevented from the situation without a waste.
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The second reason is the surface of the PCB.
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Many surface surface are very large, but the surface is more than the PCB.
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There are times the PCB itself is slightly more than the PCB.
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其实还有更严重的,屏蔽罩本身的共面度,Cependentity,必须要达到0.1mm的公差要求 之所以要求要0.1mm,是因为现在的手机板的感板厚度大概都只有0.1mm或者0.127mm
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Some have even more thin.
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Only the shadow of the surface will not reach 0.1mm.
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And with PCB-like change, the two sides will be able to cause the shadow of the surface of the surface.
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It will not be able to connect to the surface of the surface, and then it will be gradually due to the surface of the surface.
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This is not the idea that the shadow of the shadow of the surface will be able to produce the effect.
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I'll give you a little bit of a reminder here,
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maybe there are people who know that the to the wall.
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After the
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wall So these are so important.
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To put an impact on the water system.
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If it causes problems, it can bring the oil system into air.
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3. Why?
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For the outside, bifung or foam of the coated finish-size-size-size, they must control the solid finish-size-size-size-size-size-size-size.
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It is a part in the inside of the coated finish-size-size-size.
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Many industrialists can't understand that there should have been coated when the liquid is from the inside and in the inside.
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当作阻隔层,然后再度洗。 既然只度内就可以吃洗,那为何还要再度洗呢?
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只度一层内不是比较便宜吗?
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这就是为何很多人会选用度内的原因吧?
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内虽然可以吃洗,但是内在与空气接触以后会产生一层氧化膜, 这层膜会稍稍阻碍汗洗的润湿, 如果是不需要汗接的屏蔽盖,
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度内倒是个不错的选择 如果想让度内可以顺利吃上席 就必须要保持其新鲜度
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也就是说要严格管控其铺路于大气的时间 降低其氧化膜生成的厚度 其次则是要选用席膏中含有趋氧化效果比较好的注汗剂
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但这么一来注汗剂的酸性就会比较强 It is more likely to do PCBs of the tube of force.
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The long-term care must be considered.
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Another choice of the surface is the heat.
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Heat will also be in the air connected with air after creating an ionizer.
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But just need to use the usual heat to be able to talk to it.
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It will not affect the heat of the heat.
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The only thing to worry about is heat heat and the moisture.
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Also, the存息 in the
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If it's too high, it won't completely cover the metal.
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It's usually the inside.
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It's like the inside.
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It's easy to get into the inside.
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It will cause the heat of the heat.
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If it's too high, it's easy to get into the heat.
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It's easy to get into the heat.
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It's easy to get into the inside.
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It may affect the outside or the body of the body.
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So the heat of the heat must be just fine.
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How much better is the temperature?
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The temperature of the surface of the surface is different.
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The temperature of the surface is different.
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The temperature is different.
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I recommend you to ask the experience of the temperature.
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The 4th reason is the surface surface or PCB of the heat.
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This should not be done to further explain.
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It is not the surface surface or PCB of the heat.
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It will affect the heat of the heat.
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The temperature is definitely happening.
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Then, let's see what
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is the other
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thing about the
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It's just an example of the surface area.
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Now the surface area will be so that the surface area is around the surface area.
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It is important to do the surface area.
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However, the surface area will be the surface area.
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We can't do that.
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The surface area is the surface area is less than it will quite.
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The point of view is that the surface area will be in the surface area.
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Because they found that the product was in the fall of the Rd希望屏蔽罩不能偏移,又不在PCB上面设计定位孔,这不是强人手拦吗?
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就好比希望一艘浮在水面上,而且是没有船帽的船,不能飘移,是一样的道理
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而屏蔽罩换接偏移还有另外一个隐忧,就是可能会与临近的电子零件接触或者是短路
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尤其是位于屏蔽罩内侧的零件 因为肉眼看不到 不容易检查 而且很容易被忽略 所以一般我们都会要求
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要保留至少0.5mm以上的安全距离 但也有一高人胆大的RD 只保留了0.3mm
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只是这种胆大 似乎是建立在S&T制程的管控上 屏蔽罩暗接的第三个问题 并不是屏蔽罩本身 and the air is closed in the air window of the unit,
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it is easy to cause a cold and a短路.
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This is because the S&T machine is using the air flow to flow flow.
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It is necessary to spend more time to spend the air flow to the air.
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When the air flow and the air flow are not enough, it is easy to cause a cold, even a low-speed problem.
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Of course, if the temperature and the temperature are too low, it may cause a short路 or a waste of the material.
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But I must remind you, the short路 problem is usually the height of the size of the size
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and the height of the size of the temperature and the height of the temperature.
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This is not just the temperature of the temperature.
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The most important challenge is the space of the room.
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or a OI device to check out the air.
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Especially the kind of thing that you can use to use the PCB.
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The most important thing is to use the air conditioning or the air conditioning.
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Many of the air conditioning will use a or a tube tube.
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These materials will be connected to the air after the air, the surface will naturally create a layer of ion化.
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The main thing is the layer of ion化.
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In a normal situation, the ion化 is very薄, and is very transparent.
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But in the environment of the environment, the ion化 speed will be faster, the ion化 mode will be faster, and the ion化 mode will be faster, and will be more because of the light of the薄膜干涉 and the green.
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The more serious is even more serious, and even more serious will be changed to the染色.
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The high-end
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The reason why the technology is not going to be affected by the technology.
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But the technology is not going to be affected by the light or the yellow color, which is often the customer or the people of the company.
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And the money is not going to be able to get a clear product of the product.
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So the technology is not going to be able to use the quality of the product.
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There are times that we need to look at the quality of the product.
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In the In the right situation, the filter filter is not supposed to be visible in the past.
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If there are some reasons, the reason is to be in the case of the filter.
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First, filter filter is a high-end, and the time is too long.
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Second, filter filter is a clear-cut.
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The filter is not clear, the filter is not clear.
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The filter is a high-end filter, which will be a high-end filter.
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Third, filter filter.
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注汗剂中的有机酸或者活性剂在高温下会与金属反应,产生黄变彩虹色甚至是局部氧化 如果您选用的是活性较强,去氧化能力较好,也就是酸剂较多,或者是清洁效能较差,残留物较多的注汗剂或者是膝膏,问题就会更容易发生
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回汗后遇到黄变的正实性解决方法,可以开启氮气,回流来降低氧化的速度
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但根本知道还是得找出问题发生的真正原因并加以改善 比如温度曲线,出汗剂的选择,表面处理等,这样才是长久之计 如果是维修的时候发生黄变,那就直接换一个新的吧
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Next we'll talk about what's happening in the air.
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1. The first thing is to change the temperature.
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Many people think that the temperature is going to increase the temperature.
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Or, it's going to change the temperature of the temperature.
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To keep the temperature of the temperature.
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Because the temperature is going to be from temperature.
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and the temperature of the temperature can also provide more energy
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and the temperature of the temperature can be a little more light.
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But in the high temperature, I recommend that the PCVs are not going to be able to control the temperature of the temperature.
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This is not a perfect solution to increase the temperature of the temperature.
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We've already said that the filter will be a bit more light.
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There are four reasons, which are the temperature, the window, the window, the window, the window, the window, the window, and the window.
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So I would like to use the temperature.
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I would like to check out PCB 3 main, especially the window, especially the window.
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In the window of the area, you should be able to reach the temperature of the temperature.
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This is the temperature of the temperature, and it will be completely empty.
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This will not be avoided when there is no longer a situation.
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If the temperature is normal, it is not normal to increase the temperature of the temperature,
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but we need to consider the other reasons and the way to solve the problem.
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The second method is to increase the temperature of the厚度 to cover the surface of the surface.
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If it is a surface surface of the surface surface or the surface surface of the surface,
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通常都是可以透过增加膝膏印刷的高度来解决的 要注意,不能只在肝板上面扩孔来增加膝量
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而是要确保膝膏在融化的时候 与屏蔽罩的汗角是接触到的 否则膝膏量增加却仍然接触不到汗角 依然还是会发生空汗
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肝板扩孔增加膝量倒也不是完全没有效果 只是必须要等到膝膏完全融化并且聚集 才能堆高焊息 还要注意 这时候的焊息量 只有原来息高的一半体积
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所以 息高扩孔的尺寸 最好要比原来的焊垫大一倍以上 而且 再进入回暗区的时间也不能太短 否则就达不到 钢板扩孔的效果了
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第三个方法是从设计面 来降低屏蔽罩变形的风险
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这是工作熊最推荐的方法之一 除了可以从制成面来改善之外 工作选个人强烈建议 最好要从设计来下手 想办法来降低屏蔽罩变形的问题
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比如在转角处增加R角 或者是使用折边金条来强化结构
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合理的增加屏蔽罩的厚度 避免过度密封 合理开孔 完全密封的屏蔽罩 会使得屏蔽罩内的局部过热 or is the temperature of temperature too,
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or can cause change.
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It can be in the situation.
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In the wall, the wall is in the ceiling.
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It will increase the length of the wall and the wall.
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You can use the second floor to use the wall.
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There is a problem that many people remember.
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It is to don't use the wall of the wall.
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Because the wall is bigger, the wall will be bigger.
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I建议 you can use the wall of the wall to use the large-scale space of the window.
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The fourth method is to improve the temperature of the window.
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It is to improve the temperature of the window.
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Many people first接触 to the window window, they thought they would put the window window into the window window.
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So it would be the best of the window window window.
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Actually, this is not necessary.
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If you want to set the window window into a square and a full-on-way window, and also in the fan's
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in the fan's in the fan's or the fan's this is because
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fan's fan's will be affected by the fan's and the fan's will be to to be to to
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be to to be to to be to to to to to to
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JT handbag to make a few different different parts of the small space For example,
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the length of the length is about 3 to is 1mm.
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The width of the width is designed to be a small piece.
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This design is除了能保持良好的阶段 and the length of the length, and can reduce the width of the width of the width of the width of the width.
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Also, these without the width of the width of the width of the width, can also provide the width of the width of the width of the width of the width of the width.
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In EMI, EMC, the effect of the goal of the goal, I recommend you can use the thermal relief of the air conditioning on the air conditioning.
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It is called the 10-inch power.
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Because the thermal relief is usually used in the air conditioning, the air conditioning will be used in the air conditioning.
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It will cause the air conditioning to the air conditioning.
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It can reduce the heat of the heat, which will help the heat to the heat.
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It will not help to improve the heat or the heat of the heat, which will help the maintenance and the heat of the heat.
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Next, let's look at the first step of the window.
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The window window is a window window.
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The window window is roughly divided into several different types.
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First, the window window is a window window.
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It is from a fixed-to-floor and the
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This is the design of the software.
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The second is the wall.
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The wall is a wall.
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But this should be two things.
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It uses the wall to secure the wall, and it won't need to use the wall.
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The wall is a small size.
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It's a traditional device.
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can use a can use a custom-to-date and not like the wall
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will have a wide-to-date and wide-to-date when it comes to a very convenient and not need to re-check
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just use the bottom to the wall to open it and then to the wall to
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it is very suitable to to to re-refer to re-refer to re-refer 3
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is the the the wall the wall the wall to and other devices with the other devices directly
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must be removed from the wall to the wall to the wall.
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And this wall is very difficult to remove.
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The wall is basically impossible to use, must be done.
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The fourth one is the one-dimensional wall wall.
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Some of the products will be made to the wall wall.
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Then, they will use the tool to make the wall wall.
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The whole wall wall is better.
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The result is also a good thing to protect the high-reporting rate.
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But the quality of the equipment is also the best way to make it.
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The design is also the best way to make it.
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The following four different types of the equipment, what should I choose?
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Actually, there is no standard answer.
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If the product is a big, a good quality, a good quality, a good quality, the most important thing is the best quality.
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If the product is always a good quality, or the maintenance or service.
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These are usually more of a弹性.
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Next, let's look at the material.
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Many people think the material is a piece of wood.
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Actually, it is not.
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The material is about a few different.
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First, is the SPTE, which is the dust sheet.
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We call it the Makote.
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It is a high quality, and is good for the hand-drapping.
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but the color of the color is better.
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The表面 is already done with the sheet, but the cut-down if needed to be done with the sheet, it must be done with the sheet.
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The second one is the Nikko Silber.
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It has been called the yellow-white.
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Yellow-white is a color of silver, but it is not a silver, but it is a color of silver.
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The knife is a color of silver.
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It is a color of silver.
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Many RF products like it.
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It's a cut-down if you want to eat it, it must be in a cup of tea.
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The 200-inch oil is a bit of a cup of tea.
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It's a bit of a cup of tea.
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It's a bit easier to use a cup of tea.
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It's a cup of tea.
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It's a bit more expensive.
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It's also a cup of tea.
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and other materials.
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Basically, these materials will influence the production, the production, the production, the production, the production, the transmission, the production, the production, the production, the production and the production.
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So the material is not good enough, but it is not a good choice to choose the product and choose the product.
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Now, let's do a bit more for today's discussion.
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Many of the materials are not very unique.
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The público is one of the most, but in the real world you get through the量产後, You will find it actually depends on EMI design,
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PCB layout, material, SMT design, the quality of the product, and the product.
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Many of the projects are not just using the temperature of the temperature.
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The real-effective method is usually to design and design and and to work together to achieve the product.
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Are you also a product of the product?
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欢迎在留言区分享你遇到过的屏蔽罩问题
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希望今天的分享 可以让大家下次看到PCB上面那个金属盒子的时候 不只是知道它叫做屏蔽罩 而是更了解它背后代表的设计思维
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如果你喜欢今天的内容 也欢迎分享给身边从事电子制造或者是产品设计的朋友 也欢迎订阅工作熊的YouTube 以及Podcast的频道 今天我们就到这里了 Bye bye
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Vocabulary and speaking notes for this lesson
This C1 speaking lesson is built on the video “什麼是屏蔽罩(shielding can)？工程師對屏蔽罩的愛恨情仇”. The speaker keeps coming back to these words: surface, temperature, wall, window, heat. This video has 263 sentences and 3114 words to shadow. The speech runs for 28:27. The speaker talks slowly, about 109 words per minute, so there is time to copy every sound. 91% of the words are among the 3,000 most common in English; the rest is worth studying before you start.
Key vocabulary in this video
The 14 most advanced words in the video, with pronunciation and meaning:
| Word | Pronunciation | Meaning |
|---|---|---|
| width noun | /ˈwɪtθ/ | The state of being wide. |
| dissolve verb | /dɪˈzɑlv/ | To terminate a union of multiple members actively, as by disbanding. |
| thermal adjective | /ˈθɜːməl/ | Pertaining to heat or temperature. |
| handbag noun | /ˈhændˌbæɡ/ | A small bag used chiefly by women for carrying various small personal items, sometimes considered as a fashion accessory. |
| industrialist noun | A person involved in the ownership or management of an industrial enterprise. | |
| ionizer noun | a device that ionizes | |
| foam noun | /ˈfɔʊ̯m/ | A substance composed of a large collection of bubbles or their solidified remains, especially |
| module noun | /ˈmɑd͡ʒul/ | A self-contained component of a system, often interchangeable, which has a well-defined interface to the other components. |
| moisture noun | /ˈmɔɪs.t͡ʃɚ/ | That which moistens or makes damp or wet; exuding fluid; liquid in small quantity. |
| melt verb | /mɛlt/ | To change (or to be changed) from a solid state to a liquid state, usually by a gradual heat. |
| transparent adjective | /tɹænsˈpæɹənt/ | See-through, clear; having the property that light passes through it almost undisturbed, such that one can see through it clearly. |
| dimensional adjective | /daɪˈmɛn.ʃə.nəl/ | Of or pertaining to dimensions. |
| smartphone noun | /ˈsmɑɹtfoʊn/ | A mobile phone with more advanced features and greater computing capacity than a feature phone. |
| layout noun | /ˈleɪ.aʊt/ | A structured arrangement of items within certain limits. |
Phrasal verbs you will hear
| Word | Pronunciation | Meaning |
|---|---|---|
| check out verb | To record the departure or withdrawal of someone or something (such as guests, employees, books, etc.). | |
| cut down verb | To cut downward. | |
| get through verb | /ɡɛt ˈθɹu/ | To overcome; to endure. |
Sentences worth repeating
Short, complete lines from the video that you can reuse in everyday conversation:
- Next we'll talk about what's happening in the air.
- The following four different types of the equipment, what should I choose?
- Next, let's look at the material.
- Are you also a product of the product?
Grammar in this video
The structures the speaker uses most, with the exact words from the video:
| Structure | In the video |
|---|---|
| Passive voice be + past participle — the focus is on what happens, not who does it | be affected · may be affected · will be easily affected |
| Relative clauses who / which + clause — extra information about a person or thing | people who will · way, which is · RTS, which is |
| Present perfect have/has + past participle — a past action that still matters now | you've worked · We've already said · has been called |
Pronunciation to watch
The speaker uses 12 contractions and reduced forms, such as don't, can't, we'll. Say them the short way, as you hear them.
- The “th” sounds: width /ˈwɪtθ/, thermal /ˈθɜːməl/
How to practise with this video
- Listen to the whole video once without speaking and note the words you do not know.
- Shadow it sentence by sentence at normal speed, repeating each one until your rhythm matches the speaker.
- Record yourself and compare with the original, paying attention to words like width, dissolve, thermal.
What is the Shadowing Technique?
Shadowing is a science-backed language learning technique originally developed for professional interpreter training and popularized by polyglot Dr. Alexander Arguelles. The method is simple but powerful: you listen to native English audio and immediately repeat it out loud — like a shadow following the speaker with just a 1–2 second delay. Unlike passive listening or grammar drills, shadowing forces your brain and mouth muscles to simultaneously process and reproduce real speech patterns. Research shows it significantly improves pronunciation accuracy, intonation, rhythm, connected speech, listening comprehension, and speaking fluency — making it one of the most effective methods for IELTS Speaking preparation and real-world English communication.