短语词组短语worm gear hob 蜗轮滚刀;蜗轮滚铣刀worm -gear hob 蜗轮滚铣刀worm wheel hob 涡轮滚刀;蜗轮滚刀worm wheel hob detail 涡轮滚刀Niemann worm wheel hob 尼曼蜗轮滚刀tangential feed worm hob 切向进给蜗轮滚刀modified zi worm hob 修形zi蜗轮滚刀 返回 worm hob