供水

Sodium chlorate;chlorine dioxide;secondary water supply;disinfection system

氯酸钠；二氧化氯；二次供水；消毒

Based on the ana1yse of the way of the water pipe network's management and the difficult problem which exist in the course of running water pipe network It presents the collectivity project of the city service pipe network Geography information manage system and estab1ish the waterpipe network's basic data-base,and conform afresh the network data by the mode of data-base organization. Then on the base of it,open out the water pipe networks graphics show and edit,hydraulic simulation module,disposal accident module and data query andanalyse module and set up the geography information system.it will exert the network's data-base and computer effect on the city water management.

在对目前给水管网管理方式以及管理过程中碰到的问题进行分析的基础上，给出了城市给水管网地理信息管理系统的总体方案和详细设计，同时建立了给水管网基础数据库，依照数据库的组织方式对管网数据进行管理、编辑和分析，并在此基础上，开发了城市给水管网图形显示、图形编辑、水力模拟、管网事故处理、管网数据查询分析和管网数据专题图等功能模块，建立了城市给水管网地理信息系统，以充分发挥管网数据和计算机技术在城市供水管理中的作用。

With the development of urbanization, in 20 years China will become the biggest market of the water industry that supplies clean water and deals with sewage disposal in the world.

随着城市化的发展，以供水和污水处理为代表的中国城市水务将在20年后成为全球最大的水业市场。

Inside fire pipes and indoor fire hydrant or firefly are connected by fire department connection that is a sort of connection equipment,whether the fire hydrant systems or the sprinkler systems,the relationship between fire department connection and outside fire hydrant is described 1:1 quantity relation.outside fire hydrant must be increased in order to meet with 15～40 meter distance that the fire department connection from the outside fire hydrant,suggesting setting up a special circle fire pipe in the outside for setting the outside fire hydrant.

1问题的提出水泵接合器是连接室内消防管网与室外消火栓或消防车的连通器。当室内消防泵发生故障或遇大火室内消防用水不足时，消防车从室外消火栓或储水池取水，通过水泵接合器将水送到室内消防给水管网用于灭火，水泵接合器是消防安全供水的又一个保证。

Note: The potable water expansion tank shall be installed in the cold water service pipe line on the supply side of the water heater.

注：饮用水膨胀罐应该安装在热水器的供水端的冷水维修管道上。

Many Chinese rivers are drained dry before they reach the sea, including the Yellow River.

由于供水失衡，大多数中国的河流在流到海洋之前就已经干涸了。

With multiple functions of digging, grabbing, drilling, bull-dozing, ditch-cleaning and rock-breaking, this excavator can be widely used in various construction projects such as water supply, power supply, gas supply, telecommunication network, farmland and garden works etc.

该机采用伺服先导操纵，操作舒适；平台可360o回转，具有挖、抓、清沟和破碎等功能，可广泛用于公路、建筑、市政、供水、供气、供电、农田建设等土方工程。

Then lifeline systems, including road, oil, gas-supplies, water-supplies, electricity-supplies and communication are built.

针对大庆油田的生命线系统，建设了GIS下的道路、输油、输气、供水、供电及通信六大系统数据库。

VA mycorrhizae could enhance plant dry weight and improve plant P concentration, as well as increase the resistance to drought and water utilization efficiency under water stress and normal water supply at the same P application level.

在水分胁迫和正常供水条件下，施磷量相同，接种菌根组的地上和根系生物量干重显著高於不接种组，干物质累积增加，减轻水分胁迫对植株生长的抑制程度，改善了植株体内磷素养分状况，提高了白三叶对土壤磷的有效利用及水分利用率。

To analyze the current status of occupational noise hazard in water supply enterprise.

目的 对兰州市供水企业职业性噪声危害现状进行分析。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐