reference cylinder of worm

分度... ... ) reference cylinder 分度圆柱面 ) reference cylinder of worm 蜗杆分度圆柱面 ) separation cylinder 分离圆柱面 ...

... Reference cylinder F分度圆柱面 Reference cylinder of worm W蜗杆分度圆 Reference dedendum F分度圆齿根高（齿根高） ...