The students are asked to prove the purity of copper.

要求学生们检验铜的纯度。

Copper is a good conductor of heat.

铜是热的良导体。

Brass is formed by the fusion of copper and zinc.

黄铜是通过铜和锌的熔合而成的。

I was hut orderly, and got checked for dull brass doorknobs .

我是勤务兵因门的铜把手没擦亮遭人挑剔。

Copper conducts electricity well.

铜是电的良导体。

This article introduces a rapid analysis and adjustment of the copper and ferrum impurities in nickelage solution.

本文主要介绍了镀镍液中杂质铜、铁的快速分析和调整法。

Another larger piece was this impressive Chalcoalumite from Bisbee - the light blue coating on Azurite.

一较大的标本是这个给人深刻印象的铜明矾--蓝铜矿上边覆盖一层浅蓝色。

For single crystal sliding occurs in two directions, and for bicrystal copper the mechanism of plastic defor...

模拟还发现纳米铜晶体具有良好的塑性变形自组织能力。

3 Air cooler and oil cooler shall be made of red copper, albata seamless tube or other corrosion prevention tubing.

3空气冷却器和油冷却器应用紫铜、铜镍合金的无缝管或其他防锈蚀的管材。

He looked at the two in the dark with flashing lights under the gentle radiance of copper rings, was nose acetify.

他看着两枚在昏暗灯光下闪着质朴光芒的铜戒指，禁不住鼻发酸。

Experiment on determination of trace Argentum in copper coneentrace ore was done.Method of inhibition of Copper to determine Argentum was studied.

对湖南省麻阳铜矿铜精矿中的微量银作了收光谱法制定试验，研究了铜对银的测定的干扰，并提出了消除干扰的法。

Experiment on determination of trace Argentum in copper concentrace ore was done.Method of inhibition of Copper to determine Argentum was studied.

对湖南省麻阳铜矿铜精矿中的微量银作了收光谱法测定试验,研究了铜对银的测定的干扰,并提出了消除干扰的法。

Sulfide ores with BaSO4 as the main gangue , two kinds of slags , speiss and As-Cu alloy have been identified.

在还熔炼中添加了砷矿物，冶炼的最终产品是砷铜合金，还熔炼产生的砷冰铜（黄渣）等副产品中的铜通过返料操作在冰铜熔炼工序得以回收。

Property of cuprammonium rayon was introduced.Three passages drawing was done,and this processing plan was adopted when spinning cuprammonium rayon cotton blended knitting yarn.

介绍了铜氨纤维的特性,铜氨纤维与棉纤维混和纺制针织用纱的工艺案是用三道并条的工艺。

This paper introduces the technical condition of electrorefine high-nickel and high-sulphur copper anode and analyzes the problem and the reason in the practise.

介绍了高镍高硫铜阳极电解的技术条件,分析了电解过程中产生的问题及其因,提出了解决的对策。

The process of decoppering through insoluble anode electrolysis in the solution produced by leaching high grade matte nickel using chlorine is intro-duced in this paper.

本文介绍了氯化浸出高冰镍溶液用不溶阳极电解脱铜的法。

Approximately thirteen seconds before impact, the Copperhead's laser light sensor becomes active, and it uses fins to guide itself to the laser light source.

在炮弹着地前大约13秒时铜斑蛇的激光传感器启动，利用直尾翅制导攻击激光照射目标。

According to the problems in dyes production,the role of cupric ion in coupling-cupric complexation was discussed,and the chelated forms of formazane reactive dyes were introduced.

并结合生产和应用中的实际问题,对偶合-铜络一步完成中铜盐的作用、甲铜络合物的啮合形式及其性能等研究成果进行了介绍。

The Spanish Cross in Bronze was die struck in tombak or bronzed brass and the Silver can be found both in hallmarked 800 grade silver and silver plated brass.

西班牙十字勋章是铜与锌的合金或被镀青铜的黄铜和银在青铜模制.造，能发现品质800纯度的银，并且银上镀了黄铜。

Cu-Sn alloy coating with different Sn content can be replacement plating out on iron and steel surface in a solution comprising of copper sulfate, stanous sulfate, complexant and stabilization agent.

铁件在由硫酸铜、硫酸亚锡、络合剂、稳定剂等组成的溶液中,可以置换镀覆不同锡质量分数的铜- 锡合金镀层,其工艺可替代氰化物预镀铜,消除氰化物污染,是实现电镀清洁生产措施之一。