查询词典 nickel brass

This paper refers to a study on the process and principle of mechanical alloying of an ODS nickel-base superalloy.

本文对一种氧化物弥散强化镍基高温合金的机械合金化工艺、过程及原理进行了研究。

In the presence of suitable nickel catalyst and without the chelation effect of special designed dithioacetals, simple aliphatic dithioacetals could react with a series of Grignard reagents to give the corresponding olefinic products.

因此在适当的镍触媒存在下，脂肪族硫缩醛在不需要特别的螯合作用下，即可以与一系列的格林那试剂进行烯化反应。

S-Naproxen was obtained by asymmetric cross-coupling reaction of 2-bromo- 6-methoxynaphthalene with organozinc reagent of ethyl α- bromopropionate, catalyzed by chiral β-aminoalkylphosphine-nickel complexes.

用β -氨基烷基膦的NiCl2 配合物为手性催化剂，以 6 -甲氧基- 2 -溴萘和α-溴代丙酸酯的有机锌试剂为原料，通过不对称交叉偶联反应合成S --萘普生。

The distributed structure is adopt ed in the system. Its functions include on-line testing, display, data communication, overrange alarm and trend analysis of technological parameters in nickel smelting process. As a result, production process is sta ble, energy consumption and production cost are decreased.

该系统采用集散式结构，利用现代化计算机检测技术，实现了镍熔炼主要工艺参数的在线检测、显示、数据通信、越限报警及态势分析等功能，达到了稳定生产、降低能耗和生产成本的目的。

The main contents are as follows: A series of MCM-41-supported nickel phosphide catalysts with initial Ni/P atomic ratio of 0.5 - 2 and loading level of 10 - 40 wt % in the oxidic precursors were prepared by an in-situ reduction method. Their catalytic performances were evaluated in the HDN of quinoline.

论文内容主要包括：用原位还原的方法制备了MCM-41负载的磷化镍催化剂，考察了不同Ni／P摩尔比和负载量对催化剂结构和喹啉HDN反应活性的影响。

The properties and the successive operation life of two kinds of nickel pastes produced by different methods were studied parallelly.

摘 要：介绍了空气烧结镍浆的制备，比较两种不同制备方法获得的镍浆性能及连续工作寿命。

Nickel free, hypoallergenic, stainless steel case with a brown pebbled leather band.

无镍，低过敏性，不锈钢与棕色pebbled皮带

Surface treatment process are: HAL, the entire plate electroless nickel gold, Gold Finger, lead-free HASL, chemical plated / silver / tin, Anti-oxidation treatment and so on, there is conductive in accordance with the requirements of customers Cypriot hole, peelable plastic, conductive plastic and a variety of models and the photosensitive ink color.

表面处理工艺有：热风整、全板电镀镍金、金手指、无铅喷锡、化学镀金／银／锡、防氧化处理等，有根据客户要求的导电塞孔、可剥胶、导电胶和各种型号及颜色的感光油墨。

Synthesis and Crystal Structure of a Ternary Complex: [Ni2].8H2O GAO En-Jun YU Ying WANG Ke-Hua SNN Ya-Guang LI Hao-Yang (Laboratory of Coordination Chemistry, Shenyang Institute of Chemical Technology, Shenyang 110142, China) ABSTRACT A new ternary complex .8H2O (phen = 1,10-phenanthroline, Pmal 2－= phenethyl malonic acid) has been synthesized by the reaction of nickel acetate, phen and phenethyl malonic acid.

综合和三部组成的复合体的晶体结构： [Ni 2]。8H2O GAO En6月YU Ying WANG Ke华SNN Ya广李郝杨(实验室协调化学，化工技术沈阳学院，沈阳110142，中国)摘要A新的三部组成的复合体。8H2O (phen = 1，10二氮杂菲， Pmal 2-=苯乙基丙二酸的酸)由镍醋酸盐， phen和苯乙基丙二酸的酸的反应综合了。

The positive rate was 62.5%. The allergens with higher positive rate were nickel sulfate, 4 Phenylenediamine base, fragrance mix, potassium dichromate and formaldehyde. The positive results were found in patients with face dermatitis, eczema, contact dermatitis, urticaria and pruritus.

阳性率较高的过敏原依次为：硫酸镍、对苯二胺、芳香混合物、重铬酸钾、甲醛，斑贴阳性的病种有面部皮炎、湿疹、接触性皮炎、荨麻疹、瘙痒症。

Analog output can display output results.

可以模拟输出显示输出效果。

It implied that RAPD technique pro vided a new alternative for checking irradiation induced effects.

对扩增产物进行数据分析，结果表明RAPD技术能够检测出辐射后唐菖蒲基因组变异情况，可用于对唐菖蒲辐射后基因变异的分析。