“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	heath management of traditional Chinese medicine heat in blood heat increment heat index heating heating and ventilation system of power house heating boiler heating coil heating cutting heating degree-day heating effect heating effect of microwave heating energy consumption heating equipment of hot water system heating for livestock house heating furnace flue gas heating load heating load calculaiton heating load duration curve heating machinery heating medium heating medium station heating method of heat treatment heating mode heating of chromosphere and corona

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