短语词组短語bit -tooth h dullness 鑽頭牙齒磨鈍度ring bit tooth 環狀鑽齒bit tooth -row 鑽頭齒圈tooth bit 鋼齒輪鑽頭Steel Tooth Bit 鋼齒牙輪鑽頭milled tooth bit 銑齒鑽頭Ball Tooth Bit 球齒鑽頭ball -tooth bit 球齒鑽頭 返回 bit tooth