“mean grade of ore district”的概念、定义、翻译、参考文献-科学参考

单词	mean grade of ore district
释义	mean grade of ore district Encyclopedia 理学固体矿产工业指标释 mean grade of ore district矿床（区）平均品位整个矿区固定的矿体中有用元素或有用矿物含量的平均含量。
随便看	ethnic costumes ethnic differences in drug response ethnic differentiation ethnic education geography ethnic enclaves ethnic equlity ethnic geography works ethnic ghettos ethnic group ethnic groups map ethnic language geography Ethnic Language Translation Committee of the Translators Association of China Ethnic Library of China Ethnic literature of China ethnic medicine ethnic minority archives Ethnic nationalism Ethnic Party ethnic prejudice ethnic residences ethnics ethnic series maps ethnic settlement geography ethnic shopping ethnic solidarity

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