Mechanical seal
[化] 机械密封; 端面密封
🧩 词语组成解析
seal
[sil]
n. 密封;印章;海豹;封条;
v. 密封;盖章;决定;封上（信封）;
🗣️ 情景例句
No chance!
不可能。
The bus is bigger than other cars, but too crowded.
巴士虽然比小汽车大，但是太拥挤了。
When they arrived, he said: Welcome to our factory! Please come this way. Don't rush.
“欢迎参观我们厂！请走这边。别急。”