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The main research work of this dissertation is as follows: Based on the chemical reaction engineering theory and the nitrobenzene electroreduction mechanism, the plate and frame electrolyzer was designed and applied to the process of electroreduction nitrobenzene to p-aminophenol. This dissertation measured the residence time distribution data of the electrolyzer by means of the pulse response method and studied the rule of flow pattern along with the current capacity change. Under different conditions ,this dissertation studied the cyclic voltammetry properties of nitrobenzene on different electrodes by means of the dynamic cyclic voltammetry method and the electrode materials applied to the NB electroreduction have been selected primarily.Baseed on the results of cyclic voltammetry tests, this dissertation used p-electrode systems to measure the steady-state- polarization curves of nitrobenzene on different electrodes in H-type diaphragm cell, and obtained each primary factor s influence rule and the exchange current density value of each electrode.And then on the basis of the conclusions of fundamental researchs upword, the effects of influence factors on the the yield of p-aminophenol and the current efficiency,such as electrode material, current density, quantity of electricity circulated, nitrobenzene concentration . sulpuric acid concentration and so on, have been studied in detail in the systems of hign temperature , strong acidity and oxygen-poorthrough a series of electrolysis experiments in this paper.After all using Pb as anode Monel metal as cathode Dupont Nafion 417 cation-exchange membrane as membrane, this dissertation obtained the optimum technological condition: reaction temperature about 85C, current density 500A m-2, sulphuric acid concentration 20%wt.

论文的主要研究工作为：运用化学反应工程理论，结合硝基苯的电还原机理，设计出用于硝基苯直接电还原合成对氨基苯酚实验的板框式电解槽，并利用脉冲响应法测定了该板框式电解槽的停留时间分布数据，研究了流型随流量变化的规律；通过动态循环伏安法研究了硝基苯在不同电极上、不同条件下的循环伏安特性，初步评选出了用于硝基苯电还原的电极材料；结合循环伏安的测定结果，在H型隔膜电解槽中采用三电极体系测定了硝基苯在不同电极上、不同条件下的稳态极化曲线，得到了各主要因素的影响规律及硝基苯在各个电极上电还原的交换电流密度数值；在基础研究结论指导下，采用板框式电解槽，在高温、强酸、贫氧系统中，进行了一系列的电解实验，分别考察了电极材料、电流密度、通电量、硝基苯浓度、硫酸浓度等因素对收率及电流效率的影响，最终选择以蒙乃尔合金电极作为阴极、铅合金为阳极、Dupont Nofion 417阳离子交换膜为隔膜，得到由硝基苯直接电还原制对氨基苯酚的最佳电解工艺条件：反应温度85℃，电流密度500A·m~(-2)，硫酸浓度20％wt。

Chinese Internet in last few years swift and violent development, on one hand, produced a batch of Internet companies that count a technology to precede, obtained an a feather in one's cap; On the other hand, internet technology is moved toward gradually gain ground, make the industry is being reduced into introductory cage.

中国互联网近几年的迅猛发展，一方面，产生了一批依靠技术领先的互联网公司，取得了卓越的成就；另一方面，互联网技术逐渐走向普及，使得行业进入门槛正在降低。

Subjects were recruited from a medical ward of Taipei City Hospital during a period of 4 month in 2007. Patients who had peripheral lines inserted during their hospitalization and were on IV therapy for more than 24 hours were included after informed consent was obtained.

收案场所为台北市立联合医院，收案对象包括在住院期间内有注射周边静脉导管的癌症病患，有静脉注射且置放时间大於24 小时者。

When we obtained a new piece of clothing, we would leap for joy.

一件新衣服会使我们欢欣雀跃。

He obtained his Masters in Mass Communication from Chinese Academy of Social Sciences. He is also a Special Correspondent for Global Times, China's most influential newspaper in international reporting.

驻印度4年来，他写了200多万字的稿件，对印度的政治、经济、文化、科技、军事等各个领域进行了比较翔实的报道，为国人了解和理解这一遥远的邻居提供了重要参考。

A fiber obtained from the abaca plant in the Philippines.

例句1。菲律宾麻蕉植物的纤维。

Obtained about 100 models (namely wavelet-domain HMMs) of ships by training a large amount of the ship-radiated noise data, compared these models according to the combination of various conditions speed, abeam, etc.

对大量数据进行了训练得到近百个舰船辐射噪声的小波域HMM，并按航速、正横距离及不同工况组合比较了舰船辐射噪声的小波域HMM，给出了模型解释。

The classical Abel identity as specific case and some significative combinatorial identities are obtained.

由此得到Abel恒等式的特殊情形和一些很有意义的组合恒等式。

Then the focus and spherical aberration of the different conditions of different types of lens are obtained.

衡量电子透镜的会聚发散作用最简单的方法就是分析计算它们的焦距。

The saying points out abidingly that we could not erase poverty by complaining and acusing others and everyone has to obtained success by his own hand no matter how abject others are.

这种说法不变得指出一味抱怨和责备他人并不能消除贫困，无论其他人如何卑鄙，每个人都必须靠自己来获得成功。

So it was last week in Selma , alabama.

上星期在亚拉巴马州塞尔马市发生的事件也是这样一个转折点。

The group also spearheads various social programs in China.

该组织还带头参与中国的各种社会活动。