铬的

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。

This paper introduces the preparation methods and application fields of the doped lanthanum chromite material, expounds its performance advantages and study trends in each application field, and analyzes its market prospect.

介绍了掺杂铬酸镧材料的制备方法和应用领域，阐述了铬酸镧材料在各应用领域中的性能优势和研究动向，分析了该材料的市场前景。

On the basis of the analysis of depositing agents that were generally used in the process of waste chrome liquor,a new complex depositing agent which is composed of sodium stearate,polyacrylamide and soldium hydroxide with proper proportion was prepared by use of condensation principle of charge effect and polymer absorbed layer.

在分析现行废铬鞣液处理可使用的沉淀剂的基础上，运用电荷效应及高分子吸附层的凝聚作用原理，研究出用硬脂酸钠、聚丙烯酰胺和氢氧化物按一定比例制成复合沉淀剂，用于废铬鞣液处理，效果良好。

In this paper, the influenceof remelt and insulation during the secondremelt on the carbide structural in- heritance of high chromium cast iron were studied.

采取重熔的工艺措施并在第二次重熔时进行保温处理，研究高铬白口铸铁中碳化物的遗传性并对高铬白口铸铁的力学性能进行测试。

Benzaldehyde nitrogen mustard isonicotinoyl hydrazone was synthesized according to literature method. The copper , cobalt , nickel , chromium , iron , zinc and cadmium complexes of it were prepared and characterized by elemental analysis, IR, UV-vis, NMR and EPR spectra. The cytotoxicity effect of the complexes was examined on SMMC-7721 cell line. Results show that the complexes have definite antitumor activity and the synergic effect between chromium and the ligand.

依照文献合成了异烟肼苯甲醛氮芥腙及其铜、钴、铬、镍、铁、锌和镉配合物并用元素分析、红外、电子光谱、核磁共振及电子顺磁共振光谱，对这些配合物进行表征，确认了它们可能的立体结构，并研究它们对SMMC-7721人肝癌细胞的作用，结果表明它们均有一定的抗肿瘤作用，发现铬与配体存在有协同作用。

It briefly probes into the meltability of chrome ore,electrical conductivity at high temperature,reductib ility as well as viscosity to provide some basis for rational proportioning ratio n of chrome ore in smelting HC FeCr.

主要探讨了铬矿的熔化性能、高温下的导电性能、还原性能以及粘度，为冶炼高碳铬铁时合理搭配铬矿提供一定的依据。

In the traditional process,β-methylnaphthalene is oxidized with solution of chromic acid to give β-methylnaphthoquinone. However, a great deal of waste water with chromium will be produced in the process, which is very serious to environment. At the same time, the raw material consumption is great, which lead to the high production cost. Furthermore, by-product 6-methyl-1, 4-naphthoquinone will be produced, which is difficult to be separated completely and be utilized solely.

传统的生产工艺是用铬化物氧化β-甲基萘制备β-甲基萘醌，此工艺在生产过程中会产生大量的含铬废水，处理繁杂困难，对环境污染十分严重，并且原料消耗大，成本高，反应过程中的副产物6-甲基-1，4-萘醌未能加以彻底分离和利用。

In the experiment, the study on result of measurement of COD by potassium dichromate method has been conducted in the aspect of impact and application scope, proposing the method of measuring low COD in waste water of high chlorine and putting forward new comment on its influence factor.

本试验采用重铬酸钾标准法对COD测定结果的影响程度与适用范围进行了探索，提出了用低浓度重铬酸钾氧化法测定含高氯根废水中低COD的方法，对其影响因素提出新的看法。

The results showed that abrasion resistance of refiner plate made of high chromium cast iron was better than that of the stainless steel material.

通过对热磨机的磨盘材料不锈钢和高铬铸铁的耐磨性对比研究表明，高铬铸铁比不锈钢有更好的耐磨性。

The technologic process of utilizing chromic residue phosphate to produce sodium dichromate is introduced and the product technologic feasibility and marketing are discussed as well as its importance for environmental protection.

介绍了回收利用磷酸铬渣生产重铬酸钠的工艺过程，并对其生产工艺的可行性和产品销售途径及其对环境保护的重要意义进行了简明阐述。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。