“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	Nash bargaining Nash bargaining solution Nash embedding theorem Nash equilibrium Nash equilibrium point Nasher Museum of Art at Duke University Nash inequality Nashira Nash theorem Nashu Studio Theatrical Music Nashville Nasich brocade Nasij Nasir Nasir al-Din al-Assad Nasir al-Din al-Tusi Nasir al-Din al-Tūsi Nasir al-Dīn al-Tūsī Nasir al-Dīn al-Tūsī (1201—1274) Nasir Hussain Nasitai nasledovite Nasmyth crater Nasmyth focus Nasmyth spectrograph

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