短语词组短語ball tube mill 球琯磨機;滾筒球磨機micro ball -mill 微粉球磨機taperd ball end mill 錐形球頭立銑刀ball -mill refiner 球磨精研機gyrtoory ball -mill 想知道孕婦能用手機嗎鏇廻球磨機ball coal mill system 鋼球磨煤機tapered ball end mill 錐刃球耑立銑刀 返回 ball mill