Backflush valve
[化] 反冲阀
🧩 词语组成解析
回洗
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
And Do you like sports?.
或“你喜欢运动吗？”
Keep thing seven years and you will find a use for it.
备而不用。
Municipalities naturally want to secure the campers' site fees and other custom.
市政当局当然希望获得露营者的场地费和其他光临的好处，