“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	the preservation of Philadelphia historic city the preservation of Rabat city the preservation of Samarkand historic city the preservation of Segovia historic city the preservation of Seoul historic city the preservation of Siem Reap city the preservation of St.Petersburg historic city the preservation of Sydney historic city the preservation of Vicenza historic city the preservation of Warszawa historic city the preservation of York city The Press The Press Code ofBosnia And Herzegovina the price index of agricultural markets The Price of insanity the price of labour-power the price standard the pricing of corporate debt theory the primary standard for brinell hardness machine the primary standard for gauge block measurement the primary standard for line scale metrology the primary standard of absolute gravimeter the primary structure confirmation of peptide The Prime of Miss Jean Brodie The Prince

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