““three recovery” indexes of mineral resources”的概念、定义、翻译、参考文献-科学参考

单词	“three recovery” indexes of mineral resources
释义	“three recovery” indexes of mineral resources Encyclopedia 理学矿产保护与利用释 “three recovery” indexes of mineral resources矿产资源 “三率” 开采回采率、选矿回收率和综合利用率的简称。
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