性能

In the end, a test device used in lab battery performance study was realized on the basis of the develop platform which combined the DSP and the embedded

最后，本文在DSP与嵌入式操作系统相结合的开发平台上实现了用于实验室电池性能研究的测试设备，实现了电池测试设备的基本功能，达到了设计的要求，在一定程度上提高了系统的可靠性和实时性能。

From fiber's property, yarn's property and fabric's structure, we can forecast the comfort of the end-product.

根据选定的原料性能及生产方案，确定预测指标的数值，然后采用灰色理论中灰色关联的分析方法建立服用织物舒适性能的预测模型。

The performance experiments results of 15 kinds of new materials were studied, 6 of which were made into enthalpy exchangers to have the core performance test.

对国内外开发的15种芯体机能材料的性能试验结果进行分析研究，并对其中的6种材料制成的芯体进行性能实验。

After the optimal design, some parameters of the impeller such as entrance angle and diameter and have been changed. The improved impellers efficiency and cavitation performance are better than the former one.

通过对叶轮入口处的流场分析，证实了该泵性能下降是由汽蚀造成的推测；基于速度系数法建立了叶轮优化的数学模型，通过得到的流场数据和该数学模型对原叶轮进行了优化设计，优化结果对叶片的入口角和叶片的入口直径等参数进行了改进，优化后的叶轮达到了提高泵的汽蚀性能和效率的目的。

The main problems researched in the dissertation and achievements are as follows: The dissertation explains the science background and the theoretical and actual meaning of the task. The progress and the problems of the flow imaging technique are briefly explained. The advantages of electrical capacitance tomography are discussed. The paper discusses the formation and operating principle of ECT, and builds up the definite mathematical model by detail theoretical analyse, and establishes the Finite Element Model of the system by changing the finite boundary value problem of ECT into equivalence variation problem according to variation principle. On the basis of the FEM of the system, the paper builds the finite element model of the capacitance sensitivity field distribution and programs its finite element simulation software and proves the validity of the FEM of the ECT from different aspects. With the FEM and the qualitative analyse of the effect of each structural parameter of the capacitance transducer on its capability, this paper optimizes the structural parameters of the capacitance transducer, and obviously improves its capability. The compare of the simulated result with the static experimental result shows that the error of them is less than 0.9%.

其主要研究内容包括：阐述课题研究的学术背景及其理论与实际意义，概括总结出流动层析成像技术的发展现状和存在的问题，指出电容层析成像技术的优点；讨论电容层析成像系统的组成及工作原理，进行详尽的理论分析，以变分原理为基础，将ECT的有限元边值问题转换为等价的变分问题，从而建立系统的有限元模型；在系统有限元模型的基础上，建立敏感场的数学模型，编制有限元的仿真软件，并从不同角度证明电容层析成像系统有限元模型的正确性；利用有限元模型，定性地分析电容传感器各结构参数对其性能的影响，并对传感器结构参数进行优化设计，使其性能得到明显的改善。8电极ECT系统的仿真和静态实验结果的比较表明，它们之间的相对误差小于0。

The new assembled digital Doppler rader was introduced in this paper. The results of comparison experiment show that the speed and direction of wind detected by the new rader conicide with those by tethersonde, and its functions are equivalent to those of Doppler acoustic radar with separated antenna developed previously in China and other countries.

本文对新设计的集合式数字多普勒声雷达作了介绍，对比试验结果说明新设计的声雷达测量风速和风向的结果与系留气艇测量结果相符很好，其性能与过去国内和国外分离式天线多普勒声雷达的性能相当。

Low sensitivity was equivalent to the United States Transportation Security Administration setting for regular security, and high sensitivity was equivalent to its standard for high security.

低敏感度装置的性能相当于美国运输安全管理局针对普通安全装置的要求，而高敏感度装置的性能则相当于美国运输管理局高安全的标准。

The effects of erbium additions on the microstructure and mechanical properties have been investigated by means of X-ray diffraction,optical microscope,scanning electron microscope and tensile testing.

采用X射线衍射、金相观察、扫描电镜及拉伸性能测试，研究了Er的添加对合金的显微组织与力学性能影响。

Some common used channel codes are introduced, and emphasis is placed on linear block codes, cyclic codes, BCH codes, RS codes, convolutional codes and the promising turbo codes, which is planned to be implemented in the third locomotive communication systems. Their performance is analysed and compared. And some method to reduce errancy is submitted, also the interleaved technique is introduced.

文章介绍了几种常用的信道编译码方案，如线性分组码，循环码，BCH码，RS码，卷积码等，分析和比较了它们的性能，并对第三代移动通信系统的选用码Turbo码作了简要介绍，对提高纠错性能提出了若干改进方案，同时介绍了交织技术减少差错的作用。

Influence of tolerance factor on the complex engine performance was analyzed, then a new tolerance analysis and optimization method for complex product was proposed. The method synthesized effects such as tolerance size, tolerance location and component error accumulation on the product performance. Tolerance was then optimized based on the result of tolerance analysis and processing cost of different parts.

分析了公差对复杂发动机性能的影响，提出了针对复杂产品的公差分析和优化方法，综合考虑了各零件公差值大小、公差分布位置和零件误差积累对产品性能的影响，并根据公差分析结果和零件的加工成本等综合因素对零件公差进行优化。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。