城市居民

In order to control air pollution, the Chinese government has implemented a variety of programs.

城市空气污染影响着城市居民的健康和城市的发展。

Then, this paper brings forward a function of city transportation efficiency on the base of mode configuration by researching the final goal of optimizing traffic structure. It also take some restrict conditions into account in the course of optimizing traffic structure, for instance, occupying land area, environment, energy source, attainability etc. Sequentially, this paper sets up a lineal planning model of optimizing traffic structure of big city passenger transport. It takes ZhengZhou for an example to explain how to resolve the model.

接着，文中通过研究交通结构优化追求的最终目标，提出了基于方式结构的城市交通运输效率函数，并以其为目标函数，结合城市居民的出行需求、交通环境容量、道路资源、交通可达性、交通能耗、各交通方式的发展规模等约束条件，建立了大城市客运交通结构优化的线性数学规划模型，以郑州市2010年的交通结构优化为实例，说明了模型参数的标定和求解方法。

Mince,"the underclass: changing concept, constant reality,"urban institute, Washington, dace., may 1993;john d. cascara "inner-city concentrated poverty and neighborhood distress: 1970 to1990" in fannies mea, housing policies for distressed urban neighborhoods (1993), p. 20; and bureau of the census,"poverty in the united states:1990," current population reports, series p-60, no.175 (department of commerce, 1991), p.

Mince数据做了预计，下层阶级：观念转变，不断实现，"城市研究院，华盛顿，1993年5月；约翰D卡斯卡拉，《城市内集中的穷困和附近的痛苦》：1970年到1990年"Fannies Mea《给痛苦的城市居民的房屋政策》（1993年），第20页；人口普查局，"美国的贫穷：1990年"，目前人口报告，写列第60页，175号（商业部，191年），第15页。

With the interaction of central city and its periphery scennic spots, this article analysize and prove the interactions of market positioning, theme imagine, special structure , and product projection beteen central city and its periphery scennic spots through basic principles , support factors, discrepance tactics, and so on.

根据中心城市与周边旅游地的互动关系，结合城市居民出游市场的主要特征，文中还就规划定位的基本原则、支撑要素、差异化策略和互动关系等层次，对中心城市与其周边旅游地的市场定位、主题形象定位、空间结构及产品开发等问题进行了理论分析和实证研究。

Urban green space is an important component of urban ecosystem and provides security guarantee for growing urban residents.

城市绿地是城市生态系统中重要的组成部分，为越来越多的城市居民提供安全保障。

Along with continuous development of society economy,mass transit also develops more and more quickly.

随着社会经济的不断发展，轨道交通在城市中所起的作用越来越大，但其在城市交通中所占的比重与发达国家相比还很低，而城市居民中持有地铁票卡的人更少。

It is the foundation and precondition for development of city, too.

它是城市居民生存和城市社会经济发展的空间，是城市发展的基础和前提。

Municipal public utilities are important infrastructures and the main carrier of urban economy and social development.

市政公用事业是城市重要的基础设施，是城市经济和社会发展的主要载体，直接关系到社会公共利益和城市居民的生活质量。

Urban waterfront landscape directly affects the urban structure, urban ecological environment and the life quality of urban residents.

城市滨水景观直接关系到城市结构、城市生态环境及城市居民的生活质量。

In all of the municipal public utilities, the waste water treatment industry got started late in our country. The development of the waste water treatment industrial is far away behind the economy development and the citified course .At present ,the capacity of the waste water treatment can not meet the needs of the sustainable development of economy and society and city resident life.

在城市市政公用事业的发展中，污水处理在我国起步较晚，其发展远远滞后于我国的经济发展和城市化进程，目前的污水处理能力既不能满足经济，社会可持续发展的要求，也不能满足城市居民的现时生活需求，加快城市污水处理企业的改革与发展是当前城市市政公用事业的一项重要的工作。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。