About half of the world's known supply of copper ore is already in use.

全世界已知的铜矿储量,大约有一半已在使用了.

辞典例句

So Yongping copper ore deposit possessed the derivation characteristics of metallization.

永平铜矿床具明显的衍生成矿特点.

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The in - situ underground leaching of low - grade copper ore is a new technology of extraction ore resources.

难采难选 低品位 氧化铜矿就地破碎浸出技术是一项崭新的资源回收综合技术.

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Flotation of Tonglushan refractory oxidized copper ore using a new - type reagent B 130 was investigated paper.

本文研究了新型选矿药剂B130浮选大冶铜绿山氧化铜矿.

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Dexing Copper Mine adopts leaching - solvent extraction - electrolysis process to recover copper from copper ore.

江西铜业公司德兴铜矿采用堆浸 - 萃取 - 电积工艺从废矿石中回收铜资源.

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The δ 34 S V - CDT of chalcocite from copper ore are 19.2 ? ? and 20.7? ?.

辉铜矿δ34SCDT为19.2‰和20.7‰.

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