Diffusion (vacuum)pump
[化] 扩散泵; 扩散真空泵
🧩 词语组成解析
🗣️ 情景例句
Will you forgive me?
能原谅我吗？
The best teacher one can have is necessity.
我们能得到的最好教师是“需要”。
To his surprise, she said she hadn't.
使他吃惊的是，她说她不喜欢。