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
Hello.
哈喽 。
Sorry to bother you.
抱歉打扰你。
Her mother died when she was eight years old.
她8岁时母亲就去世了。