锌

We also analyze the mechanism of the initial zinc blende structure and wurtzite structure phase transition in II-VI and III-V compound materials. The results indicate that the transition of zinc blende structure to rocksalt structure due to "chair" structure transform, the transition of wurtzite structure to rocksalt structure due to "chair" and "boat" structure transform.

对II-VI族和III-V族初始相为闪锌矿或纤锌矿的压致结构相变机制进行的分析表明，闪锌矿结构到岩盐矿的相变是因为"椅式"结构的变化，纤锌矿结构到岩盐矿的相变是因为"椅式"和"船形"两种结构的变化。

In this thesis, we developed chiral proton N-O type ligands and employed them in the enantioselective addition of diethylzinc to N-diphenylphosphinoyl imines. The relationship between the structure of the ligands and the enantioselectivity was systematically studied. Furthermore, enantioselective butylation of N-diphenylphosphinoyl imines withBu〓Zn and enantioselective diphenylzinc addition to imine were also examined.

本文致力于亚胺的不对称催化有机锌试剂加成反应的研究：以手性质子型N-O配体为促进剂，对N-二苯基次膦酰亚胺进行不对称乙基锌加成反应而展开研究工作，系统地考查了手性配体的结构对反应的影响；另外，对N-二苯基次膦酰亚胺的不对称催化丁基锌加成进行了研究，并首次对亚胺的不对称苯基锌加成反应进行了初步探索。

Result The results showed that content of Pb and Zn in 10 kinds of greening plants in Jinggangshan Road was the highest, and the lowest in Jinggangshan University, they had obvious difference among 6 different regions. The plants could absorb Pb and Zn pollutants in different extent depending on pollutants and plant species. Cedrus deodara and Subina chinensis had higher absorption capacity to Pb with 4.84 mg/kg and 4.57 mg/kg, Pittoaporum tobira had the lowest absorption capacity to Pb with 0.38 mg/kg; Ligustrum japonicum had the highest absorption capacity to Zn with 37.58 mg/kg, Buxus microphylla had the lowest absorption capacity to Zn with 11.08 mg/kg.

结果］在所调查6个区域中，10种绿化植物叶片铅、锌含量较高的在井冈山大道，含量最低的在井冈山大学校园内，各区域不同植物叶片的铅、锌含量差异显著。10种绿化植物对大气铅、锌污染物均具有一定的吸收净化能力，并依污染物和植物种类的不同差异明显：对铅吸收量最高的植物为圆柏和雪松，分别为4.84 mg/kg 和4.57 mg/kg，最低为海桐，为0.38 mg/kg；对锌吸收量最高的植物为日本女贞，为37.58 mg/kg，最低为小叶黄杨，为11.08 mg/kg。

The mechanism ,technical process and the characteristics of hot － dip galvanization , mechanical plating and electroplating with zinc are introduced.

在此介绍了热浸镀锌、机械镀锌和电镀锌等镀锌防腐工艺的机理、工艺流程及特点。

As compared with traditional zinc concentrate hydrometallurgy, the technology omitted roasting and relieving hyperacidity with fume procedure, and produced sulfur. The technology, which can decrease environmental pollution and energy consumption in the zinc metallurgical process, is a new metallurgical technology. This papers innovation is: 1 The suspension electrolyte system based on zinc sulphate solution was put forward.

通过对矿物系统的研究，我们最终得到处理硫化锌矿物的悬浮电解工艺流程，该工艺与传统的锌精矿湿法工艺相比，省去了焙烧工序和烟气制酸工序，产出元素硫，明显减少锌冶金过程的环境污染和降低锌冶金过程的能量消耗，是一个全新的新冶金工艺。

The model of heat transfer due to two d ifferent components variation cases,which liquescence gases are mixed into coa l gas or not,is calculated.

结果表明，随着煤气热值的增加，导致烟气平均温度的升高，当粗锌熔液流量没有随之升高时，塔盘外壁与内壁温度也随着升高，这造成了烟气向塔盘外壁的传热量有较大的波动，此外，烟气热量均未充分利用，塔盘内壁温度均远高于锌蒸气的沸点，而煤气掺混天然气后，塔盘内壁温度更高，烟气向塔盘外壁的传热量增加比较显著，这是所供粗锌熔液流量太小，使得塔盘内粗锌熔液不能充分带走烟气热量而造成的。

The results show that there are mainly lead、zinc、 CuZn〓、FeZn〓 and four phases in hard—zinc: zinc—lead solid salution of saturation lead、lead—zinc solid solution of saturation zinc、high iron multicomponent solid solution and high arsenic multicomponent solid solution.

且硬锌中有四相存在：饱和铅的锌铅固溶体、饱和锌的铅锌固溶体、高砷多元固溶体和高铁多元固溶体，其中铁锌固溶体为白色板条状结晶，砷化合物为灰微带棕色粒状物。

Zinc sulfide nanoparticles with different sizes were synthesized by a unique precipitate dissolution method using zinc alkyl xanthate and sodium sulfide as zinc and sulfur sources, respectively. The samples synthesized were characterized by low temperature nitrogen adsorption and desorption, Transmission Electron Microscope, powder X-ray Diffraction and Fourier Transform Infrared Spectroscopy techniques.

以烷基黄原酸锌和硫化钠分别为锌源和硫源，采用烷基黄原酸锌沉淀溶解法制备了粒度可调、粒径分布比较窄的面心硫化锌纳米粒子，利用比表面积测定、透射电镜、粉末X射线衍射、傅里叶转换红外光谱等方法对合成的硫化锌纳米粒子进行了表征。

Zinc oxide raw materials and zinc oxide ores, containing high fluorine, chloride and iron, can 't be treated to produces electrowinned zinc by routine process. High-purity zinc using in non-mercury zinc powders is prepared only by using vacuum distillation or rectify process from zinc of the zero grade.

本文针对目前氟、氯、铁等杂质元素高的氧化锌物料、氧化锌矿常规方法难以处理以及无汞合金锌粉用高纯锌必须由0号锌用真空蒸馏或精馏法生产的问题。

Professional copper (brass, red bronze, green bronze, copper), nickel, black nickel, copper-zinc alloy, antique handicrafts, galvanized, imitation gold, black gun, pickling, trivalent chromium, and zinc , color zinc, blue white zinc, including all types of mold plating and mechanical products, such as the size of items within the outer diameter chrome-plated hardware, are to achieve the national leading level, and are members of the Association of Ningbo City, electroplating units, the stability of the credibility of the national quality assurance business!

专业镀铜（黄铜、红古铜、青古铜、紫铜）、镀镍、黑镍、锌合金镀铜、工艺品仿古、镀锌、仿金、枪黑色、酸洗、三价铬、黑锌、彩锌、篮白锌，包括电镀各类模具及机械产品、大小件内外径等镀硬铬，皆达到全国领先水平，而且是宁波市电镀协会会员单位，全国质量稳定信誉保证企业！

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。