Diffusion (vacuum)pump
[化] 扩散泵; 扩散真空泵
🧩 词语组成解析
🗣️ 情景例句
Sorry. I have a meeting right now.
抱歉，我马上有个会议要开。
Say not all that you know, believe not all that you hear.
莫道全所知，莫信全所闻。
The hovercraft is particularly useful in large areas with poor communications such as Africa or Australia;
气垫船在非洲、澳大利亚等交通不发达地区特别有用。