“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	general astrophysics general atlas general atomic time General Automatic Luminosity and X Y Measuring Engine general autoregressive conditional heteroskedasticity process general autoregressive conditional heteroskedasticity process; GARCH process general average general aviation general aviation aerodrome general aviation aircraft general aviation airport general aviation charter flight general aviation flight general aviation flight service station general base catalysis general-base catalysis general bathymetric chart of the oceans General Bibliographic Description and other specific rules General Bibliography of the Republic of China general biology general budget general cargo ship general cargo terminal general case General Catalog of Traditiona Quyi of Beijing

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