查询词典 research material

The research reveals that the idea of "base on students' development and life" accords with the orientation of Chemistry with life, society and environment, namely, the idea that it is the teaching material for college students major in literae humaniores and social science and it could better achieve the functions of chemistry quality education.

研究发现，&以学生发展为本&和&以生活实际为本&的&以生为本&教材设计编写理念是比较符合《化学与生活·社会·环境》教材的定位即：高校人文社科学生素质教育教材以及能够更好地实现化学素质教育功能的理念。

The adopted study method in this research includes method of historical, methods of literature study and method of material analysis.

本研究主要采用了历史法、文献材料法和理论分析法等研究方法。

The full time summer project gives students the opportunity to develop their understanding of aspects of the aerospace material covered in the first semester, through a detailed study related to the research interests and specialisations of a member of the academic staff.

在暑期项目阶段，学生将在一位特定教师的带领下，通过对某一领域进行深入的探讨研究来深化之前所学的航空航天的各方面知识。

Research on ferrocene derivatives is a hot work in organometallics chemistry, structure chemistry and material science.

二茂铁衍生物是近年来有机金属化学、结构化学和材料科学等学科领域的研究热点。

Benefit from the collaborative research with the worldclass laboratories, we have been able to develop the Security material and Decorative product to add value on our customers brand.

我们与全球原材料供应商、技术合作伙伴以及高等技术研发机构进行充分合作，确保我们有专业的工作人员为客户提供从产品研发到大批量定制生产的项目和工程支持。

With the material of top soil 5cm deep, 20m×20m, which is under the woods of Chinese Cork Oak in the urban constructing lands of Osaka International Culture Park in Minoh city, Osaka prefecture, the research carried out a small-scale spreading test of forest top soil. A small piece of wasteland was used as the test field, which is in Yamadaike Park in Hirokata city, Osaka prefecture. There were 4 test areas, and each test area included 7 disposal areas.

试验材料取自日本大阪府箕面市大阪国际文化公园都市建设地，选取面积为20m×20m的栓皮栎Quercus variabilis群落，采集林下5cm厚森林表土；试验场地设在大阪府枚方市山田池公园的一隅荒地，共设置4个试验区，每个试验区7个试验处理，计28个试验小区。

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。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。