“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	TheodoreⅡ Theodor Heinrich Boveri Theodor Herzl Theodor Leschetizky Theodor Lipps Theodor Litt Theodor Mommsen Theodoros Terzopoulos Theodor Rehbock Theodorsen function Theodorsen integral equation Theodor Svedberg Theodorus Theodorus of Cyrene Theodorus of Cyrene (约公元前465—前399) Theodor Wiesengrund Adorno Theodosius Theodosius Dobzhansky Theodosius of Bithynia Theodosius of Bithynia (约公元前160—前100) Theodosius Ⅰ the OECD task force for the safety of novel foods and feeds the OECD’s working group on harmonisation of regulatory oversight in biotechnology The Official Story The official’s election System by their suspension years

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