短語(yǔ)詞組短語(yǔ)Drill -Bit Signals Extraction 鉆頭信號(hào)提取drill l bit 鉆頭;釬頭reamer drill reaming bit 鉸孔前鉆頭drill l bit gauge 鉆頭角度規(guī)flat drill -bit 扁鉆頭 返回 drill bit