Coarse vacuum pump
[化] 低真空泵
🧩 词语组成解析
coarse
[kɔrs]
adj. 粗鄙的;粗糙的;粗野的;粗制滥造的;
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
What's your impression of China?
你对中国印象如何？
We trust you can meet our requirements.
相信贵方能满足我们的要求。
but while the drum was being shaken,
但是，圆筒受到震动，