Pilot(operated)valve
[化] 导阀
🗣️ 情景例句
He's the Dean of Admissions for the University of Michigan.
他是Michigan大学的新生注册主任。
It's not my fault!
又不是我的错！
He waited until someone new joined the company and then began to steal.
他等待有人刚加入公司后才开始偷窃。