suction valve
柯林斯词典
1. N a nonreturn valve in a pump suction to prevent the pump draining or depriming when not in service 抽水泵 (Also called foot valve)
返回 suction valve
1. N a nonreturn valve in a pump suction to prevent the pump draining or depriming when not in service 抽水泵 (Also called foot valve)