It also describes an analogue servo-system for the control of Czochralski crystal growth from "seed-on" to growth termination and the operation of this system.
2
让两肩放齐…、下巴抬起。即便你感到迷惑,你还是可以自信。问问题没有什么羞愧的地方。
Keep your shoulders squared and your chin up. Even if you are confused, you can be confident. There's no shame in asking questions.