Servoamplifier
[电] 伺服放大器
🗣️ 情景例句
I really must be going now.
现在我真的该告辞了。
What's so funny?
什么事那么好笑？
and then there are three thousand million other Milky Ways, or galaxies, in the universe.
况且在宇宙中还有30亿个天河，即银河系。