短語詞組短語internal gear ball hob 內(nèi)齒輪滾刀gear scraping hob 齒輪刮削滾刀belt gear cutter hob 帶輪滾刀gear cutter hob 齒輪滾刀gear compound hob 齒輪滾刀preshaving gear -hob 剃前齒輪滾刀new gear finishing hob 新構(gòu)形刀具gear cutter hob before grinding 齒輪磨前滾刀gear cutter hob gear hob 齒輪滾刀 返回 gear hob