“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	autumn peanut autumn rain in western China autumn river in twilight Autumn Scenery of Rivers and Mountains by Zhao Boju Autumn Sense in Xiao and Xiang by Chen Shuqi，Wangfu autumn sown crop Autumn Star autumn's wear Autumn Thoughts Autumn Willow Autumn Wind "Autumn Wind" Special Action autumn zephyrlily autunite AUV Auva Auvergnats Auvergne Aux annihilation auxanogram auxanograph Aux chain auxeticity auxetic polymer auxetics

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