screw-down non-return valve

造船工程英语词汇S-9... ... 螺钉扳手 screw wrench 螺旋止回阀 screw-down non-return valve 螺旋关闭阀 screw-down valve ...

海洋航海及海运英语翻译词汇... ... screw-cap 螺旋盖 screw-down non-return valve 截止止回阀 screw-down valve 螺杆阀 ...