Pilot(operated)valve
[化] 导阀
🗣️ 情景例句
I continued to teach piano lessons at home.
我继续在家教钢琴。
I don't think price is a problem. The most important thing is that how many you can supply.
我认为价格不成问题。最重要的是你方能供货多少。
They also have the disadvantage of being an expensive form of transport.
飞机另一个缺点是昂贵。