基本思想

Based on the existent theories and methods, the author further probes on the principles, and the polestars and the contents of the systematic evaluation, creates a theory-index system supported by performance of urban tourism, potential competitive power and supporting power of tourism environment. AHP method is selected as a key method to evaluate competitive power of urban tourism. The fifth part is a case study.

在总结前人评价理论和方法的基础上，探讨了城市旅游竞争力系统评价的基本原则、指导思想和内容，并从城市旅游竞争业绩、城市旅游竞争潜力和城市旅游环境支持力三个方面构建了一套评价指标体系，选取了层次分析法作为评价城市旅游竞争力的主要方法。

The second part overviews the process and basic meaning of Marx's theory on human development.

第二部分概述了马克思人的全面发展思想的形成历程和基本内涵。

Through discussing on the matters needing attention in implementing the major diameter water-supply pipeline engineering such as the materials selection, engineering design, concrete construction and other links, and points out that only taking these matters seriously and making checks strictly are the most basic guarantee for creating the excellent project.

通过对大口径管线工程实施中材料选择、工程设计、具体施工诸环节应注意事项的讨论，指出只有思想上高度重视，实施中严格把关，才是创建优良工程的最基本保障。

This text has described basic principle and thought of supporting the vector quantity to come back, introducing supports the vector quantity to return to the algorithm and several kinds of common kernel functions used i.e.

本文论述了支持向量回归的基本原理和思想，介绍了支持向量回归算法以及所用到

Under the guidance of the dominant spirit,the"Three Represents"theory came into being in accordance to manology to set up the goal of establishing an overall well-off society.

三个代表重要思想继承和发展了这一历史观的基本精神，用以指导全面建设小康社会的决策体系和目标安排，并构成这一目标的人学底蕴。

It's a kind of rational introspection and self-conscious choice on the administration strategy of socialist country,which are to fit the structure transition of the social development goal,to acclimate the value tropism of con tinual development model,and to satisfy the humanity in pursuing ideality.

这一思想不仅是对党的十五大提出的依法治国基本方略的重要补充和发展，也是对马克思主义国家学说的重大理论创新，更是代表着国人寻求良好政府治理模式的一种心愿

In this paper first we introduce the background of the project-----how we put forward the ideas of the toll balance algorithm according the vehicle run-distance, and describe the three-tie network architecture of network toll sysytem and basic functions of network toll software.

本文介绍了联网收费课题产生的背景，提出了联网收费的思想，总体上介绍了联网收费系统的三层网络结构及联网收费软件的基本功能，重点研究联网收费清分软件的设计，这部分内容是联网收费课题的核心。

The article presents the developing condition of PWM and SVPWM first.Then the theory of SVPWM is discussed in detail.The SVPWM is based on the thought of magnetic chain tracking.It makes the ideal magnetic chain circle of three-phased sysmmetry electric motor supplied by three-phased sysmmetry sine wave voltage for basis,uses the practical magnetic chain vector formed by the different switch modes of three-phased inverter to track the basic magnetic chain circle.During the course of tracking,the inverter changes the switch modes properly to form the PWM waves.Then the modulation wave of SVPWM is analyzed in detail.The modulation wave of SVPWM is implicit,but the analogous modulation wave in A-B-C axis needs to be calculated in order to expose the internal relation of SVPWM and SPWM.That is to show the implicit modulation wave of SVPWM. SVPWM actually is a transformed SPWM ruly sampled by the modulation wave which is injected by the zero prefaces based on space vectors.

本文首先对脉宽调制技术的发展现状进行了综述，在此基础上分析了电压空间矢量脉宽调制技术的发展现状；接着对空间电压矢量脉宽调制技术的基本原理进行了详细的分析和推导，SVPWM是基于磁链追踪的思想，它以三相对称正弦波电压供电下三相对称电动机定子理想磁链圆为基准，由三相逆变器不同开关模式下所形成的实际磁链矢量来追踪基准磁链圆的，在追踪的过程中，逆变器的开关模式作适当的切换，从而形成PWM波；然后详细分析了电压空间矢量脉宽调制技术的调制波，虽然SVPWM法的调制波是隐含的，但是为了揭示SVPWM法与SPWM法的内在联系，需要求出SVPWM在A-B-C坐标系上的等效调制波，也就是将SVPWM的隐含调制波显化；SVPWM实质是一种基于空间矢量在三相正弦波中注入了零序分量的调制波进行规则采样的一种变形SPWM。

Material field, energy field and spatial field method (Three-field) is a synthetic metallogenic prognosis method which takes stand on the three metallogenic factors and the thermodynamic principles.

物质场—能量场—空间场综合成矿预测是以成矿三要素为指导思想，以热力学原理为基本原理，利用符合成矿预测尺度要求的地、矿、物、化、遥等资料，综合考虑其它成矿有利因素，结合GIS工具的一种综合成矿预测方法。

On the basis of the analysis of the influence of the object oriented language to software test, this article discusses the tactic and technology for object oriented software test, and proposes an idea and method to test the class as a basic test unit.

本文在分析面向对象程序设计语言对软件测试影响的基础上，讨论了面向对象软件测试的测试策略及测试技术，提出了将对类层的测试作为基本的单元测试的思想和方法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。