Cryopumping
冷凝排气; 低温排气
🗣️ 情景例句
when I said we couldn't ask for anything more.
在我说我们再没什么可求的了的时候。
I ought to go to work now.
我应该现在去工作。
Let's make it a little earlier.
咱们安排早一点儿吧。