短語詞組短語worm -wheel hob thread 蝸輪滾刀螺紋nonstandard worm -wheel hob 非標(biāo)準(zhǔn)蝸輪滾刀worm wheel hob detail 渦輪滾刀Niemann worm wheel hob 尼曼蝸輪滾刀 返回 worm wheel hob