Vessel(mechanical)seals
[化] 釜用机械密封
🗣️ 情景例句
You give me the money and I'll give you the goods.
你付钱，我给货。
I'm not in.
我不在家。
Lined up against the wall, there were long thin wires attached to metal spheres.
靠墙排列着许多细长的电线，而电线又连着金属球。