left screw

基本解释左转螺丝

网络释义

1)left screw,左转螺丝2)left handed screw,左旋螺丝3)left-hand nut,左转螺母4)left hand screw,左转螺钉5)left-spiral flute tap,左螺旋槽丝锥6)left-hand thread tap,左旋螺纹丝锥

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