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深圳耶利亚有机玻璃有限公司专业生产亚克力相框、压克力鞋架、酒水餐牌、金属胸牌、亚加力资料架、有机玻璃罩、水晶经销牌、压克力价格牌、塑料台座、数码展架、有机玻璃装饰盒、烟盒烟架、书架、纸巾盒、压克力手表座、亚加力杯架、杯垫、高档酒架、烟灰缸、笔架、名片座、塑料小鱼缸、有机玻璃机箱、纸镇、花瓶、电池箱、化妆品展架、水晶板台历座、手提箱。

The tectonic reconstruction of the continental masses in China during Cambrian time has been made on the basis of the palaeomagnetic data available and plate tectonic information.

笔者根据近年来所获的古地磁数据及板块构造的研究成果，对中国各大陆块在寒武纪全球构造中的位置进行了再造。

Based upon the data of modal analysis for the plate in vacuo by finite element method and properly dealing with the integral at sin-gularity, the value of NAVMI is obtained by discretizing the integral.

在真空中模态的有限元方法分析数据以及采用适当方法处理奇点积分的基础上，应用离散积分计算了无量纲附加虚质量增量的值。

Based upon the data of modal analysis for the plate in vacuo by finite element method and properly dealing with the integral at singularity,the value of NAVMI is obtained by discretizing the integral.

这种方法的优点是比Geers[3] 提出的DAA2方法精度高 [4 ] ，但缺点是计算量较大，通常要在工作站完成，而且常常要用大型有限元软件[1，2 ，5] 。

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。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。