cone-worm milling machine

... cone distance锥距 cone-worm milling machine球面蜗杆铣床 conical roller bearing圆锥形滚子轴承 ...

 thread milling mahcine

... planetary thread milling 行星式铣螺纹 thread milling mahcine 球面蜗杆铣床 screw-thread milling 铣螺纹 ...