Pipeline valve
[化] 管道阀
🧩 词语组成解析
valve
[vælv]
n. 阀;真空管;（管乐器的）活栓;（心脏的）瓣膜;
vt. 装阀于;以活门调节;
🗣️ 情景例句
I'd like to buy some stamps for this letter.
我想买这封信的邮票。
How are you this evening?
今晚上您好吗？
We'd like you to change shippers for the next order.
下次的货我们希望换一家运输公司。