短語(yǔ)詞組短語(yǔ)bit t gage 鉆頭規(guī)bit gage wear 鉆頭直徑磨損drill bit gage loss 鉆頭直徑磨損量drill l bit gage loss 鉆頭直徑磨損量gage protecting bit 保徑鉆頭 返回 bit gage