还原

On the basis of the analysis of characteristics of trichromatic color,theoretical model of the FED chromaticity algorithm is built up.

在分析FED三基色色度特性的基础上，介绍了FED色度还原算法的理论模型，并把该校正算法成功应用到FED的视频显示中去，使图像质量得到较好的改善。

Using H2SO4 as acidulant,chromic sulfate with high purity was obtained by crystallization,which was applied to leather industry as chrome tanning agent .

将电镀废水中的六价铬还原成Cr，用化学沉淀法和絮凝法将其转化为Cr3沉淀，通过硫酸酸化，结晶为高纯硫酸铬，作为皮革工业的铬鞣剂。

ABSTRACT The theory and technology of stainless steel smelting and chrome ores reduction were discussed in this thesis.

本文综合分析了不锈钢冶炼和铬矿还原的理论和工艺。

Two main ways in industry traditionally were used to prepare chrome tanning agents: one is using sugar as reducing agent, another is using sulfur dioxide.

工业上制备铬鞣剂的传统方法有糖和二氧化硫两种还原方法。

Compared with ferrous sulfate deoxidization method, lead chrome yellow production technology was fitter to the production requirements of enterprises. It not only treated the pollution of heavy metals, but also it reclaimed and utilized lead and chrome resources, and it reduced or avoided the secondary pollution, which could gain good economic benefit and social benefit.

铅铬黄生产工艺与硫酸亚铁还原法相比更适合企业的生产需要，不仅治理了重金属污染，同时回收到利用了铅、铬资源，减免了二次污染，取得了良好的经济效益和社会效益。

The assistant materials in lead chrome yellow production such as Al2 (SO4)3, nitric acid, caustic soda and lead nitrate solution were taken as medicaments to treat the wastewater from pigment production and the treatment effect was compared with that by ferrous sulfate method.

方法］用Al2(SO4)3、硝酸、烧碱和硝酸铅溶液等铅铬黄生产原辅材料作为药剂，治理颜料生产废水，并与硫酸亚铁还原法的治理效果进行比较。

A method for the determination of potassium ferrate based on the oxidation of chromite was introduced in this paper.

以亚铬酸盐氧化还原反应为基础建立了高铁酸钾的滴定分析方法。

Effects of slag basicity,Al 2O 3 content and temperatue on reduction of chromite in slag by solid carbon have been studied.

考察了渣碱度、渣中Al2O3含量以及温度对铬矿被固体碳还原反应的影响，得到渣碱度在0。

The content of sulphate reducing bacteriaof the 35 sediment samples was determined by using MPN technique in the survey areas of Bering Sea and Chukchi Sea.

用 MPN法测定了取自白令海和楚科奇海 35个沉积物样品中的硫酸盐还原菌含量。

As well as activity was exhibited. Theaddition of cinchonidine led to a remarkable increase in the reaction rate, as confirmed bythe IR study that the modifier activates the carbonyl groups of the reactant through itsquinuclidine nitrogen. On the contrary,〓 exerted a strong inhibition effect on theenantioselective hydrogenation. Chapter 3 Finely dispersed polyvinylpyrrolidone-stabilized iridium andbimetallic clusters were prepared by the alcohol-water reduction method.

第三章 采用醇水还原的方法制备了聚乙烯基吡咯烷酮稳定的铱纳米簇及双金属纳米簇，对丙酮酸甲酯的催化氢化表明，在铱金属簇催化体系中，辛可尼定不仅诱导了一定的对映选择性，同时对反应活性有明显的促进作用，平均反应速率可提高2-6倍。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。