Servovalve
[电] 伺服阀
🗣️ 情景例句
I reckon that all rock songs are rubbish.
我觉得所有的摇滚乐都是垃圾。
Wit once bought is worth twice taught.
亲身一次的经验，抵得上老师两次的教导。
He hired a workman to repair the fence.
他雇用了一个工人修理围墙。