查询词典 chromate

The degradation of three finishing systems,carbon steel/paint,magne sium alloy/paint,magnesium/chromate conversion coating/paint,was studied by salt spray test.

镁合金因其质轻、比强度高、减震性好等优异特性，越来越受到汽车制造、航空航天、通讯和计算机制造等众多领域的青睐[1]。

The amount of bacteria in cuhure was detected, the concentration of ammonium oxalate was detected through photometric determination of oxalic acid by its catalytic reaction of methyl red by potassium chromate.

经过72h培养，所有培养基中的草酸浓度都有不同程度的下降，但乳酸菌组的降幅明显大于对照组，其中嗜酸乳杆菌组的降幅最大。

In this paper,the method for measuring water soluble Sulphate in soil by Barium Chromate Spectrophotometry is discussed as well as the experiment conditions about the rate of water soil and vibration time.

介绍铬酸钡分光光度法测定土壤中水溶性硫酸盐的分析方法，并讨论了水土比、振荡时间等实验条件。

Methods A series of improved experiments on barium chromate spectrophotometry without heating and the experiments of precision and accuracy,as well as comparison of experimental data between the improved method and the National Standard Method were carried out.

方法采用不加热方法，对铬酸钡分光光度法进行一系列改进实验，并进行了精密度及准确度试验，与国家标准方法的测定结果进行了比较实验。

In this study,the organic sulfur compound is decomposed in a oxygen flask;organic sulfur is turned into sulfate sulfur,and then the measure of sulfate is determined by Barium Chromate Spectrophotometer .

本文用氧弹燃烧法将煤中有机硫氧化成二氧化硫和三氧化硫，再将其转化成硫酸盐硫，建立铬酸钡光度法测定硫酸根的方法，从而间接得到有机硫的含量。

Barium chromate.

铬酸钡。

The optimum content of Zn-Cr film coating bath have been concluded as follows:1000g/L zinc powder,2wt% chromate,0.2wt% acrylic acid,7vt% polyvinyl alcohol through the quadrature experiment.

通过正交试验筛选出锌铬涂液的最佳组分为：锌粉1000g／L、铬酐2wt％、丙烯酸0.2wt％、聚乙烯醇7wt％。

The content of carbon and oxygen in the spot is respectively 6% higher than that in the normal coating,but the content of zinc and chromium belonging to the inorganic component is undifferentiated with that in the normal coating.It is concluded that organic resin is inhomogenously dispersed,which causes spot defects in the chromate-containing coating.

含铬绝缘涂层中斑点的C、O元素含量均比正常涂层高6%，而无机组分元素Zn、Cr含量与正常涂层无明显差别，研究表明，斑点是由于有机树脂分散不均匀所造成的。

However, chromates have caused increasingly environmental concern. The need to find low toxicity alternatives to hexavalent chromium-based passivation treatment is of prime importance. Molybdate passivation can be used to replace chromate in a wide range of applications.

但由于铬酸盐钝化对环境的污染，寻找一种低毒的代替铬酸盐钝化的处理工艺是十分必要的，钼酸盐钝化是最有前途的一种。

It was found that organic/inorganic compound chromate-free agent has better composite performance, parameters of roll coaters are very important for thickness and surface quality of the film, and reasonable drying and cooling equipments and process are something to guarantee the quality of final products through comparison and analysis between traditional and new hot dip galvanizing process after the treatment.

对比分析传统与新型的热镀锌后处理工艺得知，有机/无机复合型无铬钝化药剂具有较好的综合性能，辊涂机工艺参数对膜厚及表面质量的控制尤为重要，合理的烘干和冷却设备及工艺，是保证最终产品性能的关键。

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。