“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	Eastern Western Monthly Magazine Eastern Women’s Kingdom eastern woodlands native peoples Eastern Wu Tombs at Echeng and Wuchang Eastern Yugur language Easter Rising East-European aesthetics East European Time East Façade of the Louvre，Paris East Garden by Yuan Jiang east Greenland cold current East Hebei Autonomous Government East India Company's Press East Indian pitcher-plant family East-Indian Ridge East Korea Bay East-Kunlun orogenic belt East Lake in Xinfan East Lake of Wuhan Scenic and Historic Area East Liaohe River East London east longitude Eastman Kodak Co. Eastman Kodak Company Eastman Kodak Company in Shanghai

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