Pilot(operated)valve
[化] 导阀
🗣️ 情景例句
I always worry.
我一向担心。
In my opinion,that's an excellent idea.
按照我的意见,那是一个极好的想法。
We should not only know the theory but also how to apply it to practice.
我们不仅要知道理论，还要知道怎样把理论应用于实践。