bit gage wear的意思|示意
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钻头规磨损
bit gage wear的网络常见释义
钻头直径磨损 牙齿的磨损分级 tooh dullness grading 轴承磨损分级 bearing wear grading 钻头直径磨损 bit gage wear 钻头磨损特征 dull bit appearance 牙齿折断 tooth breakage ..