活接头 meaning in Chinese

adaptor union
articulation
detachable type joint
movable joint
union swivel

Non - soldering compression fittings - compression rings - design
非焊螺旋活接头.卡套.设计
Malleable iron threaded pipe unions ; classes 150 , 250 , and 300
可锻铁螺纹管活接头:等级150 250和300
Fittings for domestic installation ; nonferrous metal union nuts
家用安装设备配件.有色金属活接头螺母
Non - soldering compression couplings - union nuts for butt joints
非焊接压紧联轴节.对接结构活接头螺母
Male parts for cylindrical union
圆柱形活接头用阳螺纹部件

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