Diffusion (vacuum)pump
[化] 扩散泵; 扩散真空泵
🧩 词语组成解析
🗣️ 情景例句
It was wet yesterday.
昨天下雨。
Delays are dangerous.
坐失良机必有忧患。
Our TV set was broken last week. He mended it for us.
上星期我们的电视机坏了。他为我们修好了。