油阀 meaning in Chinese

oil discharge valve
oil valve

Shipbuilding - fuel oil tank self - closing drain valves
造船.燃油罐自闭式排油阀
Delivery valve of diesel fuel injection pump part 1 : technical specifications
柴油机喷油泵出油阀偶件.第1部分:技术条件
Constant - level oil valves
恒定液面油阀门
Delivery valve of diesel fuel injection pump part 2 : performance test method
柴油机喷油泵出油阀偶件.第2部分:性能试验方法
Fuel return valve assembly
回油阀部件

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