Diffusion (vacuum)pump
[化] 扩散泵; 扩散真空泵
🧩 词语组成解析
🗣️ 情景例句
Use a dictionary and grammar guide constantly.
经常使用字典和语法指南。
He who handles a nettle tenderly is soonest stung.
与恶人交往而讲仁义，必受其害。
These had settled down for the winter at Chippenham: thither Alfred went.
丹麦军已在切本哈姆扎下营准备过冬，阿尔弗雷便来到此地。