铜资源效率
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Besides these, the values of copper resource efficiency, copper ore index and copper scrap index were calculated.
计算了我国2005-2020年间铜资源效率、矿石指数和废铜指数的可能变化区间。
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Some important indexes, such as "copper ore index", "copper resource efficiency" and "copper scrap index", etc originated from copper-flow diagram were given and analyzed.
由铜流图得到了铜工业的矿石指数、铜资源效率和废铜指数等重要指标，并对其进行了分析。
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