供水

According to the project practice of pumps in Yu-zhong Steelworks, this paper put forward some water hammer preventive measures of long distance pipe pump station of water supplying, such as the multifunction controlling valve of the water pump, one-way surge tank and vent valve, etc.

根据水锤计算的特徵线法，建立了泵出口附近设单向调压塔水锤计算的数学模型，结合榆中钢厂供水泵站的工程实际，提出了长管道供水泵站采用多功能水泵控制阀、单向调压塔、进排气补气阀对事故停泵水锤的防护措施。

It is an infrastruction which aims to solve the problem of drinking water in rural areas and raise the popularizing rate of rural tap water as well as improve the standard of drinking water safety.

随着工业化和城市化水平的迅速提高，居民和工业、服务业对供水的需求大幅度增长，供水不但成为经济发展的瓶颈，而且关系到农村公共卫生安全和社会的稳定。

Methods Coverage rate of tap water and sanitary latrine was taken to stand for rural drinking water and sanitation level, 2006-2007. The possible influencing factors were divided into different ranks and Trend Chi-square test was used to determine the relationship between the coverage rate of tap water, sanitary latrine and the influencing factors.

根据2006-2007年&中国农村饮用水与环境卫生现状调查&的数据选取集中式供水覆盖率和卫生厕所普及率代表农村饮用水和环境卫生的水平，采用卡方趋势性检验，将可能的影响因素（家庭年收入、户主文化程度和家庭住房面积）划分等级，分别计算不同等级的集中式供水覆盖率和卫生厕所普及率，分析趋势性变化。

Widely used in water supply and drainage,air-condition,fire-protection water supply,city and municipal water supply

广泛应用于给排水，空调用水，消防供水，市政供水

The series products are developed a new fire fighting water supply equipment in accordance with the national standard GB50016-2001 (Code of design on building fire protection and prevention), GB 50045-1995 (Code for fire protection design of tall buildings), and standard GA 30 -2002 (Requirement and test methods of water supply fixed equipment used for fire-protection), based on the traditional pneumatic water supply equipment, combined with the modern advantages technology and water supply demands for fire protection.

XQZ型消防气压自动供水设备，是根据《建设设计防火规范》、《高层民用建筑设计防火规范》及公安部颁布的消防行业标准《GA30-92》，综合吸收了现代气压给水设备的特点和消防用水工况；在改革传统气压给水设备的基础上研制的一种新型消防供水设备。

First, this paper presents the actuality of research field in global city flood control and that of China, and analyses the questions of research field in china city flood control.

本文首先概括总结了国内外城市防洪与供水领域的研究现状，分析了国内城市防洪与供水领域中存在的问题。

With the development of the country s economy and the expediting of urbanization, it can be expected that water availability for economic and social development and ecological rehabilitation face crisis, especially water supply for urban ecological greenbelt s.

随着我国经济的持续稳定发展和城市化步伐的加快，我国经济社会发展和生态建设所面临的供水危机将会越来越严重，特别是城市生态绿地建设的供水问题，将会面临严峻的挑战。

The result is that many utilities, especially in India, have spent so little on maintenance and new investment that the provision of water is, faute de mieux, privatised.

结果很多国家的公共供水设施就得不到足够的资金来进行维护和改良。印度的情况尤甚，居民们被逼得没办法，只好退而求其次，依赖私人商贩们供水。

In Bangalore water is now available for less than three hours a day, compared with 20 hours in the early 1980s.

例如在Bangalore，现在每天供水的时间不超过3小时，而在1980年代能保证每天20小时的供水。

In Tegucigalpa, Guatemala City, and Lima, more than 30 per cent of supply is provided by small-scale water providers.42 Most of those consumers are not connected to the main distribution networks.

这些消费者大都没有和主要供水系统相连接。在提供服务方面，小型供水公司的市场普遍具有很强的竞争性。

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。