Variable-delivery rotory pump
[化] 可变排量旋转泵
🧩 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
He is as poor as a church mouse.
他一贫如洗。
The board won't approve of the budget for this year's expenditures.
会议上将不会承认本年度的支出预算。
When will you have more?
什么时候你们会再进货呢？