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
I know who you are!
我知道你是谁！
It is one thing to speak much and another to speak pertinently.
话讲得多是一回事，讲得恰当是另一回事。
What's your name, please?
请问你听什么名字？