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
you can help me with dinner.
你就来帮我准备晚餐。
He doesn't like to talk about political matters.
他不喜欢谈政治的事情。
I counted seven old cars and three old refrigerators.
我数了一下，有7辆旧汽车和3上旧冰箱。