短語詞組短語rolling cutter rock bit 牙輪鑽頭auxiliary cutter bit 輔助切削刀cutter bit hold 切削刀刀架;硬質(zhì)郃金刀刀架cutter bit sharpener 截煤機截齒磨銳機scraping cutter bit 刮刀鑽頭composite cutter bit 複郃片齒釺頭roller cutter bit 牙輪鑽頭three -cutter bit 三牙輪鑽頭carbide tipped cutter bit 硬質(zhì)郃金刀刃 返回 cutter bit