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
Would it be all right if I went with you?
我跟你去可以吗？
Why don't you join us?
你不加入我们吗？
But that was not all.
它一再重复这些圆圈。