查询词典 nickel brass

Generally the catalysts have high activity and good selectivity. At present the coupling reactions of organoborahes with terminal olefins s acid chlorides and aryl halides play an important synthetic approaches in organoborane chemical. The catalysts can be used by many kinds of organometal compounds such as: irons cobalt nickel ruthenium rhodium palladiums titaniums zirconiums tins indium and lithium organic compounds; The achievement has been amazed in preparing of unsaturated or saturated compounds and in synthesizing of natural products bioactive molecules and chiral compounds.

目前，卤代烃与不饱和烃的偶联反应和有机硼试剂与酰卤和卤代烃的偶联反应已成为有机合成的研究热点，此类反应可用铁、钴、镍、钌、铑、钛、锆、锡、铟、锂等多种有机金属化合物来催化，用于形成含饱和或不饱和C-C键的化合物，并已在天然产物、液晶、具有生理活性物质和手性化合物的合成中应用。

The single phase Fe-Ni nitrides 〓〓 with different nickel concentration from x=0 to x=0.78 were successfully prepared by annealing the oxalates at appropriate temperatures in H〓/NH〓 gas flow.

文中给出了单相铁镍合金氮化物〓〓的详细的制备条件，并认真讨论了不同镍含量的铁镍草酸盐在热处理过程中的还原和氮化产物。

The particle size of 〓 samples obtained by annealing oxalates in H〓/NH〓 gas flow is related to the nickel concentration, annealing temperature and duration The lower the temperature is, the smaller the particles are.

铁镍合金在氮化过程前后晶体结构和磁性发生变化，这种变化是由间隙氮原子的引入引起的。

Rather pure samples of nickel oxalates, with n value equal to 0.5, 1.0 1.5, 2.0 individually, were synthesized and furthermore, their molecular formula, XRD pattern and data were determined.

其中，n值为0时，即为α-NiC_2O_4·2H_2O，其余均为JCPDS尚无卡片的含NH_3草酸镍新化合物，对n值为0.5，1.0，1.5，2.0的4种，已制备出较纯的样品，确定其分子式及XRD图谱与数据。

Nickel-plated steel parts include: Front/rear CV driveshafts, Lightened outdrives, Steering link and Camber link.

镀镍钢部件包括：前/后的简历传动轴，减轻o utdrives，指导联系和曲面链接。

Characteristic of visible light spectrum was studied on nickel in ferroalloy with grating spectroscope and prism spectroscope.

使用光栅看谱镜和棱镜看谱镜研究了铁基合金中Ni元素看谱分析用可见光谱，计算机模拟了Fe和Ni元素的可见光谱图，摄制了数字化彩色图谱。

Characteristic of visible light spectrum was studied on nickel in ferroalloy with grating spectro- scope and prism spectroscope .

使用光栅看谱镜和棱镜看谱镜研究了铁基合金中Ni元素看谱分析用可见光谱，计算机模拟了Fe和Ni元素的可见光谱图，摄制了数字化彩色图谱。

DO6O of XRD analysis and skeletal vibration of IR spectrum reveals that nickel ions were located at the centers of octahedra.

CLS在1000℃左右层结构瓦解，出现一个放热峰，而NiSMM上不存在这一放热峰，表明NiSMM的层结构到1000℃时也未被破坏。

A series of alumina-supported nickel molybdenum nitrides were prepared by temperature programmed reduction successfully.

采用程序升温还原法制备氧化铝载体负载的氮化镍钼。

The GH30 (Nimonic 75 type) alloy is an important nickel based alloy with simple composition and structure.

GH30（Nimonic75型）合金是一种成分和结构比较简单的重要镍基合金。

These rules reflect some inherent feature of self and nonself, and they are the basic detection criterion of GECISM.

这些规则反映了"自我"和"非我"的内在特征，是GECISM进行"非我"检测的判据。

Until today, the media from China and the outside world still uses the term "Post 89". Regardless to whether it is for commercial gimmick or convenience, everybody still remember "Post 89", a term which carries a strong Cantonese accent.

时至今日，国内外艺术媒体还是在沿用&后八九&这个称谓，不管当初是为了商业噱头还是容易上口好记，反正大家现在是记住了&后八九&这个广东口音很重的词。