化

The author considers that improving the resistance against pulverization and against corrosion of alloy is the direction for raising the durability of alloy electrode material.

提高合金在非钝化条件下的抗腐蚀性及抗粉化性是合金化改善合金循环稳定性的方向。

The the pupation peak of the univoltine groups and the bivoltine groups were obvious,but the trivoltine groups were not obvious.

一、二化性的种群化蛹盛期较明显，而三化性的种群则无明显的化蛹盛期。

Catalysts in three synthesis routes,the hydroxylation of 4-tert-butyl-phenol,the alkylation of pyrocatechol by tert-butyl alcohol and the alkylation of pyrocatechol by isobutene,were discussed in detail in terms of reaction conditions,catalysts,temperature,reaction time etc.

论述了对叔丁基苯酚羟基化法、邻苯二酚与叔丁醇烷基化法和邻苯二酚与异丁烯烷基化法生产对叔丁基邻苯二酚的合成路线的催化剂。

Synthesis of target compounds namely: to vanillic acid as the starting material with methanol under reflux conditions for 4 - hydroxy -3 - p-methyl, then ether, and nitration, reduction, cyclization reaction 6 - methoxy -7 - benzyloxy-quinazoline -4 - one, and then by the chloride in place of aniline, benzyloxy-off, such as etherification reaction of the target compounds; target compounds with the second and third occurrence of substitution reactions of amines by the TM1, that is, 4 - amino-benzene -6 - methoxy -7 - [2 - hydroxy -3 -(N, N-diethyl amino) oxy c] quinazoline; with ether occurred Ornidazole reaction of TM2, namely, 4 - amino-benzene -6 - methoxy -7 - [2 - hydroxy -3 -(2 - methyl -5 - nitroimidazole) C oxy] quinazoline.

本论文以嘌呤类似物喹唑啉为母核，分别在其4位和7位引入结构多样的取代苯氨基和柔性侧链，设计了一系列4-取代苯胺基-6-甲氧基-7-(2-羟基取代丙氧基)喹唑啉类化合物。目标化合物的合成即：以香草酸为起始原料，与甲醇回流条件下得到4-羟基-3-甲氧基苯甲酸甲酯，然后经过醚化、硝化、还原、环合反应得到6-甲氧基-7-苄氧基喹唑啉-4-酮，然后再经氯化、取代苯胺、脱苄氧基、醚化等反应得到目标化合物；目标化合物与二乙胺发生胺取代反应得到了TM1，即4-苯氨基-6-甲氧基-7-[2-羟基-3-丙氧基]喹唑啉；通过与奥硝唑发生醚化反应得到TM2，即4-苯氨基-6-甲氧基-7-[2-羟基-3-(2-甲基-5-硝基咪唑)丙氧基]喹唑啉。

Asymmetric hydrogenation of quinoline derivatives is a hot topic in asymmetric hydrogenation. However, some problems still remained.

芳香杂环化合物喹啉衍生物的不对称氢化一直是不对称氢化领域的一个热点，然而对于苄基取代喹啉和一些多取代的喹啉衍生物至今没有实现有效的不对称氢化。

In this dissertation, Ir-catalyzed asymmetric hydrogenation, asymmetric transfer hydrogenation and asymmetric hydrosilylation of quinoline derivatives have been studied.

本论文研究了铱催化喹啉衍生物的不对称氢化、不对称转移氢化和不对称硅氢化反应。

The 2/SegPhos/I2 system can be applied in asymmetric hydrosilylation of quinoline and quinoxaline derivatives successfully, and up to 93% ee was obtained.

芳香杂环化合物喹啉衍生物的不对称硅氢化反应一直是不对称氢化领域的一个难点，我们利用2/-SegPhos/I2催化体系首次实现了杂芳香化合物：喹啉和喹喔啉的不对称硅氢化反应，最高获得了93%的ee值。

By deep researching into the intelligent controls-oriented virtual instrument and its development system,the quintuple systematic model based on computer is introduced into ICVI systems,the uniform model of ICVI is built up and dissertated it in detail.

通过对智能控件化虚拟仪器及其开发系统的深入研究，将基于计算机的系统五元模型引入到智能控件化虚拟仪器系统，提出并详细论述了智能控件化虚拟仪器系统的统一模型。

By deep researching into the intelligent controls-oriented virtual instrument and its development system,the quintuple systematic model based on computer is introduced into system modeling of developing system of ICVI,the model of development system of ICVI is built up and dissertated it in detail.

介绍了智能虚拟控件及其仪器的有关概念、原理；讨论了基于计算机的系统建模的五元模型；通过对智能控件化虚拟仪器及其开发系统的深入研究，将基于计算机的系统五元模型引入到智能控件化虚拟仪器开发系统的系统建模，提出并详细论述了智能控件化虚拟仪器开发系统的模型。

Lastly, we study the conditions of linearization for symmetric system, from which we can see that a symmetric system is linearizable on manifold M if and only if this system is linearizable on quotient manifold M/G.

最后讨论了对称非线性系统线性化问题，从中可以看出对于具有对称性的非线性系统只要在商流形M／G上能满足线性化条件即能保证在整个流形M上能线性化。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。