氰化

The research and status of non-cyanide electroless gold plating using sodium sulfite and/or hyposulphite as complexing agent are described in detail.

详细阐述以亚硫酸钠及硫代硫酸钠为配位剂的无氰化学镀金的研究及发展现状。

Heat treating technology development closely connected with three large scale technology andequipment importing is reviewed, and the fbatures of hcat treating specialization and large scale production areanalyzed. Main tcchnical progresses ofgas carbonitriding instead ofliquid cyaniding, improvement ofcontrol accuracyin gear carburizing, improvement of carburizing layer unitbrmity by preoxidation, increment of raw gas purity incontrolled atmosphere use of fbrging wastc heat cooling control for normalizing,...

回顾我国汽车工业热处理技术发展与3次大规模技术引进密切相关，分析了汽车工业热处理技术发展专业化，规模生产的特点，列举了10年来在气体碳氮共渗取代液体氰化；齿轮渗碳控制精度提高；采用预氧化工艺提高渗碳层均匀性；解决可控气氛中原料气纯度以及锻造余热控冷正火和等温正火技术的应用等方面嵢〉玫闹饕删停岢龈咝＝⑷却砩璞缸ㄒ档冉ㄒ椤

A double salt of platinous ''.

氰亚铂酸盐氰化铂与其它''。

Methods 4-Methylacetophenone was used as starting material to give 2-(4-methylphenyl) propionitrile via reduction, chlorination and cyanation. 2-(4-Bromomethylpheny1) propionic acid obtained by hydrolysis and bromination of compound Ⅲ could further provided loxoprofen sodium through four steps.

以4-甲基苯乙酮为原料，经还原、氯化、氰化得到2-（4-甲基）苯基丙腈，然后经水解、溴化得到关键中间体2-（4-溴甲基）苯基丙酸，该中间体再经过4步反应可制得洛索洛芬钠。

The XRD patterns showed that the major peaks are at 18.80°, 15.20°, 33.85°, 23.65° and 24.02°, respectively, which are in very good agreement with the values of lanthanum potassium hexacyanoferrate tetrahydrate, further confirms that the compound obtained by the electrochemistry is a crystal of LaKFe〓·4H〓O.

峰电流与扫描速率的平方根在10∽750mV/s的范围内呈线性关系，表现出扩散控制的特征；在此基础上，计算了铁氰化镧在铂电极表面的浓度和钾离子在膜中的扩散系数。

In order to investigate theinfluence of nitrogen on the transformation characteristics, carburized samples with prac-tically the same carbon content as the cyanided ones were also prepared and examined.

为了探索氮对过冷奥氏体转变特性的影响，还将这两种钢进行了固体渗碳处理，使渗碳试样具有和高温氰化试样实际上相同的含碳量，然后将二者进行了平行试验。

The C-curves of the cyanided case of 18CrMnTi and 18CrMnMo steels austeni-tized at 860℃ were determined by metallographic methods.

用金相法测定了18CrMnTi与18CrMnMo钢高温氰化层经860℃奥氏体化后的恒温C-曲线与马氏体开始转变温度M_H，同时也测定了A_1温度。

In order to guarantee the safe and effective operation of the treatment facilities for sludge containing cyanogens , this paper makes the comment on the treatment facilities for the process of gold-extracting with all-sliming cyanided carbon slurry in a Taining-based ore wash plant, and puts forward some requirements for the design and operation.

为确保尾矿处理设施安全、有效运行，对泰宁某选矿厂全泥氰化炭浆提金工艺含氰尾矿浆的处理设施进行了评述，提出了设计及操作要求。

The results show that the cyanided samples have lower A_1 temperatures, considerablyhigher M_s points and shorter incubation periods in both the pearlitic and bainitic regionsthan the carburized samples.

实验结果指出：氰化试样较渗碳试样具有较低的A_1温度、高得多的M_H点、和过冷奥氏体在珠光体与异茵体区间转变时较短的孕育期。

The coordination of cyanides and Co3+ in DMC catalyst was less firm than that in Zn3[Co6]2·xH2O.

DMC催化剂是以双金属氰化络合物为骨架，并络合其它有机和无机配体的复杂络合物，可表示为Zn3[Co6]2

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。