screw valve的意思|示意

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screw valve相关短语

1、 screw down valve 旋压阀,螺旋阀,螺杆阀

2、 elevating screw valve 升杆阀

3、 screw lift valve 螺旋提升阀

4、 screw-down valve 螺旋关闭阀

5、 screw-down stop valve 螺杆向下止动阀,螺旋阀

6、 inside screw stop valve 内螺纹截止阀

7、 gas valve screw 气阀螺钉

8、 outside screw and yoke valve 外螺旋轭阀

9、 inside screw lift check valve 内螺纹升降式止回阀