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
that you care about us.
关心我们大家。
An empty sack cannot stand upright.
空麻袋，立不直。
John works in a factory about ten kilometres from his home.
约翰在一家距离他家大约 10公里远的工厂工作。