勘测表明它包括至少240百万吨纯度2.3%的铜，这将使其成为一座世界级的铜矿。
Surveys suggest that it consists of at least 240m tonnes at a purity of 2.3%, which would make it a world-class deposit.
要求学生们检验铜的纯度。
高纯度铜，这是精心构筑了正确的介质和绝缘材料确保本图集议长电缆的一贯和稳定的负载放大器。
High purity copper, that is carefully constructed with the correct dielectric and insulation materials ensure that Atlas Speaker Cables present a consistent and stable load to amplifiers.
简要论述了铜酞菁纯度的测定；介绍了容量法和重量法的操作过程，并对其进行了对比和探讨。
The determination of purity of copper -phthalocyanine is discussed brie fly. The volumetric and weight operation procedures are introduced. Two methods are compared and discussed.
以负载型铜、镍催化剂为加氢催化剂，液相加氢还原粗仲辛醇中的2辛酮制备高纯度仲辛醇。
The supported copper and nickel catalysts are applied to preparation of purified octanol 2 by using hydrogenation reduction.
难道不是，比较从两块同纯度、同量的矿石中提炼好的铜才是更可信的方法么？
Aren't comparing the refined copper from two ores of the same purity and amount a more convincing way?
采用纯度为98%的正21烷（C21H44）作为相变材料（PCM），通过抽真空灌注的方法将其灌注到泡沫铜内部，封装并作绝热处理后作为试验件。
The 98% pure Heneicosane(C21H44) was used as the phase change material(PCM), and it was filled in the copper foam through a vacuuming procedure.
在电解精炼铜过程中添加微量的该添加剂以获得表面平整光滑、纯度高的电解铜。
The electrolytic copper with smooth surface and high purity can be achieved through adding a slight amount of addition agent in the copper electrolysis refining process.
在电解精炼铜过程中添加微量的该添加剂以获得表面平整光滑、纯度高的电解铜。
The electrolytic copper with smooth surface and high purity can be achieved through adding a slight amount of addition agent in the copper electrolysis refining process.
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