还原剂

The effect of roasting temperature, roasting time and the reducer dosage on the leaching ratio has been studied. The best process condition is cinder/ lignite is 1/0.8, the roasting temperature is 800, the roasting time is 20min. The second is vitriol lixiviate.

本工艺分四个阶段进行：首先是硫铁矿烧渣的还原焙烧，探讨了焙烧温度、焙烧时间和还原剂用量对铁的还原浸出率的影响，得到的最佳工艺条件为烧渣：褐煤=1：0.8，焙烧温度800℃，焙烧时间20min。

The process of selective reduction roasting-ammonia leaching-solvent extraction-electrowinning is adopted to extract nickel,cobalt and recover iron from low grade nickeliferous laterite ore.

本研究采用选择性还原焙烧-氨浸-溶剂萃取-电积工艺从低品位红土镍矿中综合提取镍、钴、铁，重点介绍了采用煤作还原剂，选择性还原焙烧的试验研究。

The quantity of trace arsenic in grain and soil was determined by hydride nondispersion atomic fluorescence method.

本文采用氢化物无色散原子荧光法测定粮食和土壤中微量砷含量。实验中选择了测试时的最佳条件，包括介质酸度、还原剂KBH_4的浓度和流速、载气流量、原子化温度等。

Olefine, electrophilic or nucleophilic substitution of arenes, nucleophilic addition of carbonyl compounds stereochemistry in elimination reaction of double bond forming and the choosing of oxidants and reducing agents in redox system.

在化学反应方面重点是烯烃的亲电加成，芳香烃的亲电，亲核取代，羰基化合物的亲核加成，消除反应的双键定位和立体化学，氧化，还原反应中氧化还原剂的选择。

Since manganese oxide ore powder has a strong oxidizability in acidic aqueous solution, manganese is difficult to be directly stripped. In order to realize solvent leaching, a reductant with lower electrode potential should be used.

氧化锰矿粉在酸性水溶液中有很强的氧化性，锰难以直接溶出，为达到溶浸目的，应有电极电位较低的还原剂存在。

Using tin bichloride-glycerol mixed solution as reductant,the determination method of phosphorus content for bioceramic base-material-β-calcium phosphate with phosphomolybdate blue spectrophotometry has been established.

以二氯化锡-甘油混合液作还原剂，建立了用磷钼蓝分光光度法测定生物陶瓷基材β-磷酸钙中磷含量的方法，确定了最佳测定条件。

The stimu- lating effect of glycine on nitrate reduction was greatly influenced by preillumination treat- ment of tobacco leaves,and also by the activity of respiratory chain.

但乙醇酸脱氢酶主要存在于低等植物如藻类巾；在高等植物中，乙醇酸的氧化主要是由乙醇酸氧化酶催化的，形成乙醛酸和H言02，但没有还原剂的生成L19，。

Ultrafine copper powder s were prepared by direct reduction method with hydrazine hydrate and formaldehyde as composite reductive agent and glucose prereduction method,respectively.

分别采用水合肼-甲醛复合还原剂法以及葡萄糖预还原法制得了微米级的超细铜粉，并利用粉末X射线衍射以及扫描电镜对其进行了表征。

Law of MTT of 1MTT law principle is 20 centuries a kind when 80 time development rises fast, handy in order to live thiazole of MTT of reducer of cellular metabolization content detects one kind of Lawei foundation the method of cellular amount, was in above all 1983 by Mosmann[4] rat applies at detecting to the cellular factor such as IL-2 survives to the cell and be affected proliferously in the research of lymphocyte department.

本文就MTT体外应用探究目前状况及其进展作一综述。1MTT法原理MTT法是二十世纪八十年代发展起来的一种快速、简便的以活细胞代谢物还原剂MTT噻唑蓝为基础的一种检测细胞数量的方法，由Mosmann[4]在1983年首先在鼠淋巴细胞系的探究中应用于检测IL-2等细胞因子对细胞存活和增殖的影响。

Feature: This product is designed for restring the original color and bright of the car. It contains fine abrasive, color restorer and eradicator, which can remove the oxide layer on the lacquer surface. You can operate manually or mechanically. After being treated by this product, the lacquer surface can restore its original color.

产品性能：本品为恢复车身原有光泽和色彩而设计，内含有极细研磨剂、色彩还原剂、去污剂等成分，能有效去除漆面的氧化层、可手工或机械操作，方便快捷，经简单处理，即可立即还原车漆本色。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐