screw down mechanism 中文意思是什麼
screw down mechanism
解釋
壓下機構-
Shipbuilding. sea water valves. screw - down stop valves. pattern i. operating mechanism. parts list
造船工業.海水專用閥門.螺桿向下止動閥.式樣.操作機構.零件細目表 -
Shipbuilding. sea water valves. screw - down stop - and - check valves. pattern iii. operating mechanism. parts list
造船工業.海水專用閥門.螺桿向下止動和止回閥.式樣ii .操作機構零件細目表 -
Shipbuilding. sea water valves. screw - down stop - and - check valves with opening mechanism. pattern iv. operating mechanism parts list
造船工業.海水專用閥門.帶打開機構的螺桿向下止動和止回閥.式樣.操作機構零件細目表
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