O.S&Y.gate valve是什么意思
中文翻译外螺纹与轭闸阀
网络释义
1)O.S&Y.gate valve,外螺纹与轭闸阀2)outside screw and yoke gate valve,外螺轭式闸阀3)outside screw and yoke (OS & Y),外螺纹阀杆及阀轭4)O.S.Y .value = outside screw and yoke valve,外螺轭阀5)inside screw gate valve,内螺纹闸阀6)outside screw and yoke valve,外螺旋轭阀