查询词典 change material

The results showed that the fibrillating of dispersed phase enhanced with the increase of draw rate, but no visible change in diameter of fibers was observed. Compared with HDPE/PC normal blend material, the tensile strength of HDPE/PC in-situ composite almost remained unchanged, but its notch impact strength had a large improvement.

结果表明，随著牵引速度的提高，纤维状分散相所占比例增加，但纤维直径无明显变化；HDPE/PC原位复合材料与其普通共混材料相比，拉伸强度基本无变化，但冲击强度提高较大。

Modal auxiliary verbs are dealt with over two units, the first on all meanings, and the second on modal verbs in the past verbs related to modals, such as able to, obliged to,manage to, supposed to are covered However, the main area of change is in the material.

模态助动词处理超过两个单位，首次对所有的含义，第二个是关于情态动词在过去的动词相关的情态动词，如能，责任，管理，要涵盖，不过主要的地区变化是在物质。

In this paper,taking defatted silkworm chrysalis as raw material and using microscopic analysis technology of electronics and optics,we observed the change of structure of the sample which was soaked in hydro- chloric acid solution and sodium hydroxide solution,and ascertained the alkaline approach as the method of sepa- rating proteins and the chitin s.

以脱脂蛹为原料，采用电子光学显微分析技术，观察酸、碱浸泡样组织结构变化，确定了碱法为蛋白质与甲壳素的分离方法。

The Zr doping didn't change the crystal structure, but weakened the crystallization of the material.

锆的掺杂并未改变材料的晶体结构，但降低了材料的规整度。

The experiment shows that,with the change of silastic/ ethoxyline ratio (weight ratioε) in the mixed material,the velocity changes in 2600～

实验表明，混合材料中硅橡胶与环氧树脂的量之比不同，速度可在2600～950 m/s之间变化。

This paper describes the change of FPC mounting technology and theme of material and mounting technology etc of FPC.

概述了FPC的安装技术的变迁以及材料和安装技术等方面的课题。

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。

The Brief Analysis of Marketing : The chloroethylene is the main material for the production of koroseal and its market supply and demand change along with the development of chlorine.

市场简要分析：氯乙烯是生产聚氯乙稀树脂的主要原料，它的市场供需随着聚氯乙稀的发展而变化。

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。