正在确认阅读权限…
Why Semiconductor Cleanrooms Matter
半导体洁净室为什么重要
精读先不看文字，完整听一遍。
-
Modern microchips contain transistors smaller than 5 nanometers — about 1/10,000 the width of a human hair.现代微芯片中的晶体管尺寸小于5纳米，约为人类头发直径的万分之一。
-
A single speck of dust larger than a transistor could break an entire circuit pattern during photolithography.光刻过程中，一颗比晶体管还大的灰尘微粒就可能破坏整个电路图案。
-
Cleanrooms use advanced air filtration, positive pressure, and strict gowning protocols to limit particles to fewer than 10 per cubic meter.洁净室采用先进的空气过滤系统、正压环境和严格的着装规范，将每立方米空气中的颗粒物控制在10个以内。
-
Workers wear full-body suits, gloves, masks, and shoe covers to prevent skin flakes, hair, or fibers from contaminating wafers.工作人员须穿戴全身防护服、手套、口罩和鞋套，以防皮屑、头发或纤维污染晶圆。
-
Even airflow is carefully engineered: laminar flow pushes particles downward and away from sensitive silicon surfaces.气流也经过精密设计：层流将颗粒物向下并远离敏感的硅片表面推离。
-
Vibrations, temperature swings, and static electricity are also tightly controlled, since they can distort nanoscale etching.振动、温度波动和静电同样受到严格管控，因为它们会干扰纳米级刻蚀精度。
-
Without such environments, mass production of smartphones, medical scanners, or electric vehicle controllers would be impossible.若无此类环境，智能手机、医疗扫描仪或电动汽车控制器的大规模生产将无法实现。
-
Each chip wafer passes through hundreds of steps across multiple cleanrooms — any contamination risks scrapping thousands of chips.每片芯片晶圆需在多个洁净室中经历数百道工序，任何污染都可能导致数千颗芯片报废。
精读 · 大约 10 分钟
听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。
③ 学 · 重点表达
- Even airflow is carefully engineered: laminar flow pushes particles downward and away from sensitive silicon surfaces. 气流也经过精密设计：层流将颗粒物向下并远离敏感的硅片表面推离。
- Vibrations, temperature swings, and static electricity are also tightly controlled, since they can distort nanoscale etching. 振动、温度波动和静电同样受到严格管控，因为它们会干扰纳米级刻蚀精度。
- Without such environments, mass production of smartphones, medical scanners, or electric vehicle controllers would be impossible. 若无此类环境，智能手机、医疗扫描仪或电动汽车控制器的大规模生产将无法实现。
④ 懂 · 选一选
⑤ 今天会说这一句
Even airflow is carefully engineered: laminar flow pushes particles downward and away from sensitive silicon surfaces.
⑥ 跟读并录音
Even airflow is carefully engineered: laminar flow pushes particles downward and away from sensitive silicon surfaces.
第一版：录下来、回听、再听标准音。系统打分以后再加。
⑦ 说 · 自己来一句
用今天的表达，自己说一句。
例子：Even airflow is carefully engineered: laminar flow pushes particles downward and away from sensitive silicon surfaces.
已记下。连续天数以后会显示在课表里。
陈老师指导
课程开发中，敬请期待。成人和孩子都可以先自学听读、精读。
这边的讲解音轨还在做。想先跟着老师走完固定 30 课，可以去陈老师带读社（和自学通行不是同一份会员）。
课程开发中，敬请期待。