female screw是什么意思

网络释义

1)female screw,阴螺旋，螺母2)propellernut,螺旋桨螺母3)female screw,阴螺旋4)left-hand threaded nut,左旋螺母5)right-handed nut,右旋螺母6)nut of propeller shaft,螺旋桨轴螺母