“average grade of mine district”的概念、定义、翻译、参考文献-科学参考

单词	average grade of mine district
释义	average grade of mine district Encyclopedia 工学〔矿产工业指标〕释 average grade of mine district矿区平均品位整个矿床（区）中有用组分的总平均含量。又称矿床平均品位。是从整体上衡量矿床贫富程度的一项参数，也是衡量某些矿床（尤其是矿石品位变化大的）在当前是否值得开发建设和开发后能否获得预期经济效益的一项指标。
随便看	Yunmeng Pond Yunmeng Xian Yunmen school Yunmenshan Caves Yunmenshan grottoes YunMing Lun Yunnan Yunnan Academy of Scientific and Technical Information Yunnan Annals Yunnan Art Museum Yunnan Baima Snow Mountain National Nature Reserve yunnan baiyao powder Yunnan black tea Yunnan broken black tea Yunnan-Burma Highway Yunnan Caoxi Temple Baohua Pavilion repair project Yunnancheng Feiquan Yunnan Clique Yunnan copper Yunnan Daily Press Group Yunnan Dashanbao Heijinghe (Black-Necked Crane) Guojiaji Ziran Baohuqu Yunnan Dianju Opera Company yunnan dongchuan debris flow Yunnan donkey Yunnan Drama Theatre

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