Bimetallic(spring cone) seal
[化] 双金属密封
🧩 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
OK. Your offer si 5%. I think you have yourself of a deal.
好的，你们降价5%，我们就这样说定了。
If I were in you shoes.
如果我站在你的立场。
What's it used for?
有什么用途？