铬酸盐

Well, we'll ship the bichromate in steel drums and the chromic anhydride in oil cans.

嗯，我们会把重铬酸盐用钢桶装，而无水铬酸则用油罐装。

Crocoite is a mineral consisting of lead chromate and crystallizing in a monoclinic crystal system, and it is the only chromate of any importance found in nature.

赤铅矿是一种由铬酸铅组成的矿石，以单斜晶体形式存在的结晶体。并且是自然界中发现的唯一一种重要铬酸盐。

The major difficulty that I have experienced with Cr is that it often exists in forms that are difficult to put into solution. Chromite

采用铬作为实验对象的主要难题是它的存在形式是难溶于水的，例如亚铬酸盐FeO。

Part 3 : determination of chromate, iodide, sulfite, thiocyanate and thiosulfate.

第3部分：铬酸盐、碘化物、亚硫酸盐、硫氰酸盐和硫代硫酸酯的测定

The problem that noxious chrome of sexavalence and trivalence is present in the galvanizing coat and passivating solution of the prior art is solved substantially by the passivating solution of the present invention.

本发明提供的无铬钝化液可以从根本上解决了现有的产品镀锌层及钝化液中含有有毒有害的六价铬和三价铬元素的问题，并可真正替代现有的含有六价铬和三价铬的铬酸盐钝化液，实现对电镀锌层和热镀锌层的钝化。

The experimental results indicate that the treatment process of copper alloy using benzotriazole can improve the corrosion resistance greatly.

目前常采用的是铬酐及重铬酸盐的钝化处理工艺，虽然效果比较好，但由于铬化处理过程中的铬离子对人体和环境的污染严重，因此研究针对不同使用环境的、良好的无铬钝化工艺具有很大的现实意义。

X-ray photoelectron spectroscopy was used to investigate the content and chemical valence of chromium element,and the content of compounds in chromate passive film formed on commercial tinplate via a cathodic electrolytical treatment.

用X射线光电子能谱(X-ray photoelectron spectroscopy，XPS)分析的方法，对铬酸盐钝化镀锡钢板的正常表面及缺陷点处铬元素的含量、价态以及由铬元素组成的化合物进行了研究。

The results show that the addition of accelerators to the treating bath will accelerate the coating formation, and the added ammonium salt and chloride will change the Ce content in the coating from 5.93% to 4.15% and 9.27%, respectively. The added accelerators of ammonium salt and chloride could also increase the coating anti-corrosion performance to 2.6 times and 6.6 times against that treated without accelerator, respectively, and increases the micro-hardness of the Al surface from HV68.8 to HV389 and HV450, respectively.

结果表明：处理液中添加成膜促进剂可提高转化膜的生长速度，并且添加铵盐、氯化物后转化膜的铈含量从5.93%改变为4.15%和9.27%；还发现添加成膜促进剂铵盐、氯化物后转化膜耐腐蚀性提高为原来的2.6和5.6倍，其中后者的耐点滴腐蚀能力优于传统铬酸盐转化膜，并且还可将铝合金表面的显微硬度从HV68.8增大至HV389和HV450。

From electrolyte concentration, electrolyte temperature, voltage, timing, additive, the effect of anodizing oxidation on the quality of surface treatment are discussed, From hole sealing liquid composition, pH, timing, the effect of hole sealing on the quality of surface anodizing treatment are examined.

因铬酸盐氧化存在对环境不同程度的污染，所以在实验过程种又研究选用了一些无铬化学氧化法，通过实验对比了它们的优点和缺点。

Usual chromic and nitric acid bright dips for cadmium are not chromate treatments.

通常铬和硝酸明亮镉逢低不铬酸盐处理。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。