Screw Threads for Detachable Rock-Bit的意思|示意
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可拆卸岩石钻头螺纹
Screw Threads for Detachable Rock-Bit的网络常见释义
活动凿岩钻头用螺纹 ... rock-bit interaction model 岩石 Screw Threads for Detachable Rock-Bit 活动凿岩钻头用螺纹 rolling cutter rock bit 牙轮钻头 ...