And chalcopyrite in copper minerals accounted for about 74% of total copper.
黄铜矿难以很好地解离是难选的另一原因。
Dissolved organic complexing copper accounts for 61.6% of total copper in filtered seawater.
溶解态铜中有机结合态占过滤海水中总铜的61.6%。
Mr Pinera says that Codelco can enter joint ventures with private companies to develop some of its copper reserves, which are a third of the country's total.
皮涅拉称，Codelco可以同私营公司合作开发一些铜矿资源。这些铜矿储量占世界总储量的三分之一。
Thee fruit has higher percentages of fiber, vitamin C, magnesium, copper and potassium, andleads to higher mean intakes of total sugars.
梨这种水果富含纤维素、维生素C、镁、铜和钾，会导致人体总糖的平均摄入量更高。 。
The program is officially ended in 1923, with a total of fewer than 800 copper-cooled engines ever being produced and only 300 sold to dealers.
计划在1923年正式结束，生产了总共不到800pcs的铜冷却发动机却只卖出了300。
An analytical procedure and calculation method on the content of copper, total pyrophosphate, phosphate and ammonium citrate in pyrophosphate copper plating bath were given.
介绍了一种焦磷酸盐镀铜溶液中铜、总焦磷酸根、磷酸根、柠檬酸铵含量的分析方法和计算方法。
The rice varieties with strong root system, large active absorption root surface and total root surface area had strong tolerance to copper poison.
根系发达、根系活跃吸收表面积及总吸收表面积大的品种，有较强的耐铜毒性。
The fruit has higher percentages of fiber, vitamin C, magnesium, copper and potassium, and leads to higher mean intakes of total sugars.
梨这种水果富含纤维素、维生素C、镁、铜和钾，会导致人体总糖的平均摄入量更高。
The result of this study reveals that REE are concentrated in slag mainly during the smelting process, and total content of REE in the copper ingots is very low.
结果发现稀土元素在铜矿冶炼过程主要富集在炼渣中，金属铜中的稀土元素含量很低。
Objective: To study the relationship between copper and organic components, total flavonoids of Astragalus(TFA), total saponins of Astragalus(TSA) and total polysaccharide of Astragalus(TPA).
目的：通过对黄芪中有机成分的提取，探讨元素铜与总黄酮（TFA）、多糖（TPA）及总皂苷（TSA）的关系。
These desulfurizing agents proved to be excellent: reducing the total sulfur of LPG significantly and making the grade of copper stain test go down from 3 to 1.
结果表明，该脱硫剂脱硫效果很好，使液化气的铜片腐蚀从3级降至1级，总硫明显下降。
The methods of producing copper sulphate from copper scrap is introduced in this paper, and the factors which effect total quantity of dissolve copper are studied in detail.
介绍了废杂铜生成硫酸铜的新工艺，并对影响溶铜总量的各因素进行了研究。
The methods of producing copper sulphate from copper scrap is introduced in this paper, and the factors which effect total quantity of dissolve copper are studied in detail.
介绍了废杂铜生成硫酸铜的新工艺，并对影响溶铜总量的各因素进行了研究。
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