查询词典 copper-nickel-zinc alloys

These components are usually made of iron- or copper-base alloys and very small, so powder metallurgy offers a better method than the processes involving machining, drop forging, die casting, pressing etc.

这些部件一般是铁基或铜基合金，而且尺寸很小，因而用粉末冶金法制造比用切削加工，模锻，模铸，冲压等方法更好。

Therefore, the exemption is set RoHS lead as an alloying element, in steel, aluminum, Copper alloys were allowed to reach the corresponding content of the duty exemption.

所以RoHS 指令设定的豁免条件是铅作为合金元素时，其在钢、铝、铜合金中的含量才允许达到相应的豁免值。

In addition, the research and application of low pressure casting technology in copper alloys and ferrous metals are described emphatically.

重点叙述了低压铸造技术在铜合金及黑色金属领域的研究应用状况，并展望了低压铸造技术在未来的发展趋势。

A new method for the rapid separation and determination of trace niobium in copper-niobium alloys was presented.

提出了一个快速分离与测定铜铌合金中微量铌的新方法。

Phosphor bronze strip is the most widely used ductile material of copper alloys at present.

锡磷青铜带是当前应用最广泛的铜合金弹性材料。

Part 1 : cast copper alloys for solid and multilayer thick-walled plaint bearings.

第1部分：整块的和多层厚壁滑动轴承用铸铜合金

The motor rotor shall be of squirrel-cage design and constructed of die cast aluminum, fabricated copper or their respective alloys.

电机定子应该采用松鼠笼结构，并采用压铸铝，装配铜或其各自的合金等材质制造。

ANTICOR is the system which generates Cu-Fe ion or Cu-Al compound to protect internal surface of sea-water cooling pips from adhesion and growth of marine organisms by Cu-ion and protect copper alloys in condenser by forming Fe-ion or Al3 protective films as well.

ANTICOR 系统用来向海水中输送铜－铁离子或铜－铝离子。铜离子用来抑制海生物的生长并杀死海生物。铁/铝离子形成絮状物粘在冷却片及管壁上，使冷却片及管内壁免受腐蚀。

The copper alloys with high strength and high conductivity was melted by a coreless frequency induction furnace and alloying elements were directly added into alloy liquid. It not only reduced the cost, but also improved the production efficiency. So the method was suitable for an industry production.

本文采用将合金元素直接加入有芯工频感应电炉的方法熔炼高强高导铜合金，既降低了成本又提高了生产效率，满足了工业化大生产的要求。

The result shows that modification can make the β-Si phase thin when the joining amount is 0.3wt%, making the best modification result. Alloying elements Mn and Ni are always used to neutralize iron"s harm in aluminum alloys. They can form many kinds of complicated metallically compounds with Fe and Al, and eliminate needle-like iron-rich phases to reduce iron"s harm in Al-Fe alloy. Copper makes the alloy microstructure thick and electromagnetic stirring obviously makes the alloy microstructure thin, round the second phase, when the stirring voltage is 200V, making the best result; Reheat makes liquid phases emerge in the alloy, when the warming temperature is 650?

研究结果表明：红磷可以明显细化合金中的初晶硅，当加入量为0.3wt%时，取得最佳变质效果；锰、镍合金中加入后，通过形成多种复杂金属间化合物，细化针片状富铁相，减小铁对铝硅合金性能的危害；铜使合金微观组织发生粗化；电磁搅拌明显细化合金组织，使第二相圆整化，搅拌电压为200V时，取得最佳细化效果；二次加热使合金组织中产生部分液相，在650？

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。