“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	divalent metal divariant system divaricate divaricate saposhnikovia root div curl lemma div-curl lemma dive divector dive guidance Divehi diver anoxia diver compression exercise dive rescue diverge divergence divergence angle divergence class divergence difficulties in the quantum field theory divergence difficulty divergence form divergence-free divergenceless field divergence of an integral divergence of a series divergence of a tensor field

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