left hand worm是什么意思

网络释义

1)left hand worm,左旋蜗杆2)right hand worm,右旋蜗杆3)endless screw,蜗杆，螺旋4)hands of worm,蜗杆旋向5)helix of cylindrical worm,蜗杆螺旋线6)left-handed screw bar,左旋螺杆