当蜗轮蜗杆的交错角为时，还需保证，而且蜗轮与蜗杆螺旋线旋向必须相同。

When the worm crisscross Angle, still need to ensure that's too, and worm gear and worm helical screw to must be identical.

youdao

当蜗轮蜗杆的交错角为时，还需保证，而且蜗轮与蜗杆螺旋线旋向必须相同。

When the worm crisscross Angle, still need to ensure that's too, and worm gear and worm helical screw to must be identical.

youdao