交流分析

With the help of system mathematical model, the contradiction between increasing dynamic response of converter and decreasing the ripple of output voltage is elaborated based on the analyses of mechanism of the converter's dynamic regulation problem.

因此，借鉴交流电机理论中的空间坐标系概念，建立了该变换器的开关函数，提出了系统的数学模型，解决了用单相等效电路法分析三相PFC电路存在的问题。

This article tries to trace back to the background of the 18th century again when the art of Chinese gardens had been disseminated in Europe, and emphatically analyzed the thought and those men who exerted tremendous influences on the dissemination of the art of Chinese garden, such as the relationship between "chinoiserie" and rococo style, and missionaries' recommendation about the art of Chinese gardens.

17、18世纪中西贸易的发展促进了中西文化的交流，激发了欧洲对中国艺术的热情，追溯了这一促使中国造园术在欧洲得以传播的时代背景，着重分析了其中对中国造园术在欧洲传播影响甚巨的人物与思想，诸如&中国热&的兴起与法国&洛可可&风格的关系，传教士对中国园林艺术的推介作用等。

Chapter 2 deals with micro-level violation of Cooperative Principle in Lord of the Flies.

第2章从微观(来源：ABC论文de网www.abclunwen.com)交流层面分析小说《蝇王》的合作原则违反。

Our task Expand the exchange of space medicine, Ma Ping dissemination of knowledge barriers and improve the use of literature.

我们的任务拓展医学交流空间，抹平知识传播壁垒，提升文献分析利用。

AC impedance spectroscopy analysis indicated that the interface resistance and ohmic resistance of the latter were markedly less than that of the former.

通过交流阻抗谱分析，后者电池的欧姆电阻与界面电阻均比前者明显减小。

In order to solve this problem,on the basis of analyzing the internal resistance of fuel cell and advantages of EIS method,a practical method of online measurement for fuel cell ohmic resistance ,namely alternating current variable frequency an.

为了解决这个问题，本文在对燃料电池内阻进行分析的基础上，结合电化学阻抗谱测试思想，提出了一种改进的燃料电池欧姆内阻在线测试法——交流变频调幅测量法，并基于高性能数字信号处理器设计了测试系统硬件电路和软件，得到了较好的测量效果。

The results indicate that the cell only doped with Al2O3 (Cell 1) is of the worst output performance at 850 ℃, the output power density being 0. 083 W/cm^2, and that the cell doped with Al2O3 and coated with buffer layer (Cell 2) is of the best output performance at the same temperature, the output power density being 0.120W/cm^2. AC impedance spectroscopy analyses indicate that the interface resistance and Ohmic resistance of Cell 2 are obviously less than those of Cell 1, meaning that insulative nickel aluminum spine1 is generated by the reaction of Al2O3 and NiO during the sintering at a high temperature.

结果表明：850℃时，含Al2O3的电池输出性能最差，输出功率约为0.083 W/平方公分；含Al2O3并具有过渡层的电池输出性能最好，输出功率约为0.120 W/平方公分；交流阻抗谱分析表明，含Al2O3并具有过渡层的电池的欧姆电阻与界面电阻均比不含过渡层的明显减小，说明YSZ中添加的Al2O3在高温烧结过程中，与阳极材料NiO发生反应生成不导电的镍铝尖晶石。

The problems about evolution phylogenies and safety of GEMs for HGT were discussed.

并结合基因组序列分析，重点阐述远缘生物之间发生的广泛的基因交流，以及其与进化、系统发育和基因工程生物安全性问题的探讨。

The transfer of genes from one species to another especially between remote species was emphasized by the information from genome sequencing.The problems about evolution phylogenies and safety of GEMs for HGT were discussed.

并结合基因组序列分析，重点阐述远缘生物之间发生的广泛的基因交流，以及其与进化、系统发育和基因工程生物安全性问题的探讨。

By dipping in sodium chloride solution, heat-resistant experiment, salt spray test and thermo gravimetric analysis, it can be concluded that this coating has high decomposition temperature.

通过红外光谱和交流阻抗分析了在不同温度使用条件下对涂层成分和阻抗值的影响，表明该涂层能长期耐200℃的高温，而且具有良好的耐热耐蚀性。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。