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male thread
auto. 螺纹
compr. 外螺纹
dril. 公螺纹; 公扣
mech.eng. 外〔阳,公〕螺纹
oil 阳螺纹
tech. 阳螺旋; 外丝扣; 外螺丝
male thread: 9 phrases in 4 subjects
Aviation2
Drilling1
Mechanics3
Technology3