跟读练习: The Semiconductor Production Process Explained Clearly - 通过视频学习英语口语
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Humble sand.
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This is what the building blocks of the future are made of.
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But making them is a long process compromising a great many steps.
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First, the silicon dioxide in the sand has to be converted into pure silicon.
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After that, it is cut into wafer -thin disks.
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In Dresden, these raw wafers are 300 millimeters in diameter and less than a millimeter thick.
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In our clean room, up to 35 ,000 chips are then made from each of these disks.
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In numerous process stages, the wafers are given their characteristic surface structure.
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After coating with a photoresist layer, the wafer surface is exposed, developed, and etched.
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This results in the desired conductor structure.
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Such structures are hundreds of times finer than a human hair.
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Dopants are then implanted in the material to increase the electrical connectivity of parts of the semiconductor. In subsequent phases,
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this and other process steps are repeated until the entire layout of the chip has been deposited on the wafer.
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This involves heating the wafer to more than 1 ,100 degrees Celsius, in some cases up to 27 times.
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Up to 200 measurements are done, and up to 26 exposures.
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All in all, this can mean as many as 700 processing steps and 14 weeks processing time.
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Once this is completed, the microchip is assembled from as many as 30 such layers, like a mini skyscraper.
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Each layer has its own function.
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Interconnecting them makes the microchip highly complex.
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Semiconductor chips, the building blocks of our future.
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关于本课
您正在使用跟读技巧通过视频"The Semiconductor Production Process Explained Clearly"练习英语口语和发音。
每天练习15到30分钟，将显著提高您的英语流利度和发音准确度。
什么是跟读法？
跟读法 (Shadowing) 是一种有科学依据的语言学习技巧，最初开发用于专业口译员的培训，并由多语言者Alexander Arguelles博士普及。这个方法简单而强大：您在听英语母语原声的同时立即大声重复——就像是一个延迟1-2秒紧跟说话者的影子。与被动听力或语法练习不同，跟读法强迫您的大脑和口腔肌肉同时处理并模仿真实的讲话模式。研究表明它能显着提高发音准确性，语调，节奏，连读，听力理解和口语流利度——使其成为雅思口语备考和真实英语交流最有效的方法之一。