back valve
短语词组
- Back PRSSure Valve 单向阀
- BWV back water valve 回水阀
- shuttle back pressure valve 梭式止回阀
- Back pressure valve [机]背压阀;止回阀;回压阀;逆止阀
- downhole back flow valve 井下回流阀
- arrow back pressure valve 供应箭形止回阀
- back wash valve 反冲洗阀
- back fire valve 回火阀门
- back flow valve 回流防止阀 返回 back valve