“drawn ore grade”的概念、定义、翻译、参考文献-科学参考

单词	drawn ore grade
释义	drawn ore grade Encyclopedia 工学矿床开采设计释 drawn ore grade出矿品位采出矿石中有用成分的含量。以百分率表示。是衡量采出矿石质量的重要指标。
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