Vacuum diffusion pump
[化] 真空扩散泵
🧩 词语组成解析
pump
[pʌmp]
n. 抽水机;打气筒;泵;轻软舞鞋;
v. 用泵输送 ;涌出;急速摇晃;盘问;
🗣️ 情景例句
the kids in the ward
住院的孩子们
What I have done is due to patient thought.
我的成就是由于坚忍地思索。
The woodcutter replied: I'm going to cut this tree down.
伐木工人回答说：“我要把这棵树砍倒。”