查询词典 introduce

The first part is preface, on the basis of expounding the background, the purpose, the meaning and the thinking of the thesis study, briefly introduce the research achievements of domestic and international urban spatial structure; the second part is summary, expatiate on the connotation, component, research span and space type of urban spatial structure; The third part is theory foundation, mainly introduce the three classical models of city spatial structure in the west country (concentric circles mode, fan-shaped mode and multi-core mode) and the relative city development theories (growth pole theory, dot-axis theory, core-fringe theory, metropolis circle theory and city space evolution theory); The fourth part is general situations of study region; The fifth part is the analysis of Lanzhou city spatial structure evolution, along the historical venation Of city development, on the basis of analyzing industrial structure change, focus on and sumup the characteristics of spatial development and form, meanwhile, analyze factors which influences the spatial development; The sixth part is the analysis of Lanzhou city spatial development trend, put forward the development models of Lanzhou city spatial structure from three space aspects(the core city, the city, region) in the future, they are group gobbet structure, fingers structure, circle structure; The seventh part is to mainly put forward the development strategies for the different spatial structure models.

第一部分为前言，在阐明论文研究背景、目的及意义、思路的基础上，简要介绍了国内外城市空间结构相关研究成果；第二部分为概述，对城市空间结构的内涵、组成要素、研究尺度及其空间类型作以介绍；第三部分为理论基础，主要是对西方城市空间结构的3大经典模型(同心圆模式、扇形模式和多核心模式)以及与本研究相关的城市空间发展理论(增长极理论、点轴理论、核心——边缘理论、都市圈理论和城市空间演化理论)的介绍；第四部分为研究区概况，主要是对研究区域范围的界定及其社会经济发展概况介绍；第五部分是兰州城市空间结构演化分析，顺着兰州城市发展的历史脉络，在分析产业结构变动的基础上，着重对城市空间发展及其形态特征进行归纳总结，并分析了空间发展的主要影响因素；第六部分是兰州城市空间发展趋势分析，从中心城市、市域、区域3个空间层面上提出未来兰州城市空间结构的不同模式，即组团结构、指状结构、圈层结构；第七部分是城市空间发展策略，针对不同的城市空间发展模式提出一些对策建议。

The objective of this study is to introduce briefly the basic concept and expression of isotope and the theory of isotopic hydrograph separation,to review the advantages and disadvantages of various hydrograph separation methods which are applied all over the world and to introduce two-component and three-component isotopic hydrograph separation models in details.

简要介绍了同位素的基本概念、表示方法以及同位素示踪流量过程线分割的基本原理。综述了国内外关于流量过程线分割各种方法的优缺点，并对二水源同位素过程线分割模型和三水源同位素过程线分割模型进行了详细介绍和推导。

In chapter 1, we simply introduce the background and the present state of the theory of semirings; for the sake of convenience, we introduce some fundamental knowledge about idempotent semirings.

第一章，我们对半环理论研究的背景、现状和幂等元半环的基础知识作了简要的介绍。

The objective of this Course is to introduce the organic structure and its operation of the WTO and import relief system study on the impact and response after our access to WTO; research into the meaning, history and future development of import relief system; systematically introduce the laws and practice of our safeguards, anti-dumping and countervailing system, as well as the recent development After Doha Agenda Development. Through study the law and practice of import relief system could be extensively applied and thus provides our industry with temporary relief while we enter the global market. Also we can expand our understanding about international trade policy and its implementation practice we hope creat could though this training program which contribution to our society.

本课程主要在介绍世界贸易组织组织架构与进口救济制度之运作，探讨我国加入WTO后之最新进展及其影响作一评估与因应对策，进口救济制度实施之意义、沿革及其发展，我国平衡税及反倾销税与进口救济制度之运作方式及采行贸易或产业调整协助等救济措施之规范，与乌拉圭回合之反倾销协定、补贴及平衡措施协定与防卫条款有关之最新发展作有系统介绍，期能了解我国在打开全球国家之市场管道之同时，抵制国际保护主义压力对国内受害产业提供适度之暂时性救济工具之运用，作为理论与实务兼修之入阶，藉以了解国家经济政策运作方向，期能将来进入社会服务贡献所学。

In this paper, we firstly introduce some basic properties of wavelet, which are involved in chapter one .secondly, we introduce orthogonal wavelet bases, scale function and scale equations etc.,which are involver in chapter two .

本文首先介绍了傅里叶变换和小波变换的由来以及一些基本性质，这主要体现在第一章，随后介绍了正交小波基以及尺度函数，尺度方程等概念，这主要体现在第二章。

Please allow me to be the first to introduce products before I introduce this mew product.

在我引进这个新产品前，请允许我先做个产品的介绍

There have been many good results when M is minimal sub manifold. In the first section we will introduce the context and make a general description on the recent researches. In the second we will introduce the complexion of the development for this problem. In the fourth we\'ll discuss the second gap on special conditions using similar methods when the mean curvature is constant, and find the second gap.

关于极小子流形的间隙问题已经有了很多好的结果，第一节引言中我们将介绍本文的研究背景及这些主要结果，第二节中我们来介绍具有常平均曲率情形的间隙问题的发展现状，在第四节中我们用类似的方法讨论平均曲率为常数的紧致超曲面的第二间隙问题，得到了第二间隙δ=？

The abstract result contains several concrete results in the literature and can also be used to deal with some new cases for resonant differential equations.In the introduction, we briefly introduce the development process of the variational methods. In Chapter 2, we list some basic knowledges refering to the variational methods, including the Sobobev space,—△ operator, the weak solution and the minimizing sequence methods and some minimax theorems. In Chapter 3, we introduce the research process of Hamiltonian system of second order and the semilinear elliptic problems, using the methods introduced previously. In Chapter 4, we prove the main theorem of the thesis, and apply it to the problems in the previous Chapter, and can also be applied to some new resonant cases.

在前言中，简要介绍了变分法的产生、发展过程，在第二章中我们介绍了有关变分法的一些基本知识，包括Sobolev空间，—△算子，弱解，极小化序列方法和一些极小极大定理，在第三章中我们介绍了非线性项有界或满足次线性条件，以及它满足推广的Ahmad-Lazer-Paul条件时，二阶Hamiltonian系统和半线性椭圆问题的研究历程，最后在第四章中我们证明了本论文的主要定理，并把它应用到第三章的问题中，使得前面的几种共振的情形都可以统一到这个抽象的结果中。

In this article we introduce the monotone span programs and bull function firstly. Then we introduce access structures and secret sharing schemes.

本文首先介绍了单调张成方案和布朗函数，再介绍了存取结构和密钥共享体制的概念。

That can introduce a noun clause and it also can introduce an attributive clause, is there any difference between them ?

A 。 that 引导的为名词从句，因为 that 在从句中既没有地位，也没有任何词义。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。