镀银

Copper and copper prevent discoloration protective agent, copper prevent oxidant, galvanization passivation blocker, silver protectant, LED silver protectant, prevent discoloration, gold, silver, and gold, protective agent, we hole of tin additive is not completely, and formaldehyde environmental protection coating resistant color effect very good, long time in the air will become yellow, oxidation.

铜保护剂、铜防变色剂、铜防氧化剂、镀锌钝化封闭剂、银保护剂、LED银保护剂、银防变色剂、金保护剂、金封孔剂，我们的各种锡添加剂完全是不含甲醛环保型，并且镀层抗变色效果很好，长时间在空气中不会变黄、氧化。

The process flow is: that the original steel plate, that is, the original mould, Yin, maintop pattern concave, pressed plastic version —— welding by stamp layout: skinpass page make up layouts guniting silver, copperizing-nickel-coated, cavity (for positive and maintop pattern convexes)—— a printing plate nickel plating shall be guilty of submodules, concave maintop pattern--a printing plate chromeplating treasure…every two pieces by mechanical bent of the semisircle package 5.1 core-students'computer proofing-business card printing and membership card.

其工艺功程是：邮票原钢版，即原模，晴图、版纹凹形，冲不抬塑料版——按邮票版式割切拆版——裂缝版面——喷银、镀铜——镀镍(为母模，阳图、版纹凸形)——镀镍为印版，即子模，版纹凹形——印版镀铬——把两块印版用板滞弯不败半圆形包在滚筒芯上——上机打样——制卡和会员卡制作。

Meanwhile, the relationship between several processing parameters, such as formula of silver-plating solution, its PH value and plating temperature, and silver-plating speed is to be studied.

同时研究了化学镀银液的配方组分、镀液的PH值及施镀温度等工艺参数和化学镀银速率之间的关系。

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子制。造，能发现品质800纯度的银，并且银上镀了黄铜。

The copper-coated graphite/silver matrix composites have been made by the method of powder metallurgy. The properties of the composites, such as volume density, resistivity, hardness, bending strength and tribological behavior were tested, and comparison was made with silver-graphite composite of the same content graphite.

将镀铜石墨粉与银粉用粉末冶金法制备成镀铜石墨－银基复合材料，对其密度、电阻率、硬度、抗弯强度和摩擦磨损性能进行测试，并与相同石墨含量的银－石墨复合材料进行对比。

With this method the copper plating graphite powder was made up in 50% copper content .The silver- copper plating graphite composite was prepared while the silver- copper-graphite composite and the silver-graphite composite were also made up together .The mechanical and electric characteristics of the three kinds of composites were tested and it was found that the copper plating graphite powder can only optimize the properties of the silver matrix composite under the high content of the graphite ,the conductivity and the mechanical property was improved and the material could take higher current in the same carbon content .At 20% carbon content, the resistivity of Ag-graphite composite was 1.67 times as high as that of silver- copper plating graphite composite, the resistivity of Ag-Cu-graphite composite was 3.23 times as high as that of silver- copper plating graphite composite. The bending strength of silver-copper plating graphite composite was 2.17 times as high as that of silver- copper-graphite composite, and the bending strength was 2.11 times as high as that of silver- copper-graphite composite. The wearability of silver- copper plating graphite composite was also enhanced greatly at high carbon content.

利用该方法制备了50%铜含量的镀铜石墨粉，然后进一步制备了一系列相同碳含量的银-石墨复合材料、银-铜-石墨复合材料、银-镀铜石墨复合材料，对三种材料的机械、电气性能进行了综合对比，发现在低碳含量时镀铜石墨粉不能改善复合材料的上述主要性能，而在中高碳含量时则能明显优化复合材料的整体性能，提高了复合材料的电导率，使复合材料在中高碳含量时既具有较高的耐磨性同时也能负载较大的电流，复合材料的机械性能也因镀铜石墨粉的加入而大幅提高，20%碳含量时，银-石墨复合材料的电阻率是银-镀铜石墨复合材料的1.67倍，银-铜-石墨复合材料的电阻率为银-镀铜石墨复合材料的3.23倍，银-镀铜石墨复合材料抗弯强度是银-铜-石墨复合材料的2.17倍，是银-石墨复合材料的2.11倍，同时，在实验给定的条件下，中高碳含量时银-镀铜石墨复合材料的机械磨损耐磨性和通电磨损耐磨性都得以显著提高，银-镀铜石墨复合材料在实验时的接触电压降也更为稳定。

The company committed SMD SMT nickel zinc ferrite cores silver gilt.

深圳市海瑞达电子有限公司创立于1999年，公司主要致力于SMD表面贴装镍锌铁氧体磁芯镀银、镀金。

The company committed SMD SMT nickel zinc ferrite cores silver gilt.

深圳市海瑞达电子有限公司创立於1999年，公司主要致力於SMD表面贴装镍锌铁氧体磁芯镀银、镀金。

It centers mainly on the difference between pulse cyanide silver coating and DC cyanide coating in appearence, micromorphology and anti-sulphur ability.

用霍尔槽实验法初选了氰化物溶液中方波脉冲镀银的工艺参数范围，进而用组合实验确定出了最佳的脉冲周期、占空比和平均电流密度。

Aiming to give the personal experience of having a concert for one, the P5 hopes to take headphones to the next level. Not only does it aim to make you appreciate and feel the raw music, but it is also aesthetically very pleasing with its black sheep skinned leather earpads and silver metal finishes.

Bowers Wilkins对P5寄予厚望，希望能通过它推动市面上的耳机更新换代。P5不仅能为你带来无与伦比的音乐享受，而且还有非常贴心的设计，耳罩部分采用羊皮作为材料，而耳机的金属部分也经过镀银处理。

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。