供水

In excavating the foundation pit of Shanghai Science and Technology Building,the unloading plan for original water conduit of Shanghai water providing system was adopted.

在上海科技城基坑开挖中，对上海市供水原水管渠采用卸载方案保护。

For preventing the pressure surge occurred when the pump stops in long conduit system, measures of installing air inlet and relief valves to prevent pressure surge are presented.

对长管道系统停泵产生的压力涌浪提出了装设进排气阀的防护措施，建立了进排气阀的特征线方程，并对特征线方程的求解进行了讨论，将这种防护措施用于某供水泵站，从计算结果来看进排气阀较好地抑制了液柱分离的产生，有效地控制了系统中的压力骤增。

Ill area county is mutual as a result change well 6 times well, out of service 1, 5 wells are used normally, have content of well water fluorine 1 times to exceed bid among them, dispersive type water supply a collect, content of average water fluorine is 0.81mg/L.

结果病区县共有改水井6眼井，停用1眼，5眼井正常使用，其中有1眼井水氟含量超标，分散式供水1个屯，平均水氟含量为0.81mg/L。

Fans and pumps are the mechanical properties of square torque characteristics, pump run-time,* the opening of the valve regulating the flow to meet water supply requirements, working conditions and the fan is similar to,* adjusting damper, duct or valve opening tailgate degrees to adjust the blower air volume, pumps flow methods, known as cutting regulation, regulation on cost-cutting process, the fan or pump the inherent characteristics of the same, only * small throttle clearance, baffle or valve opening, artificially increase line resistance, which increases the loss of pipeline system is not conducive to fan, pump energy-saving operation.

风机和水泵的机械特性均为平方转矩特性，水泵运行时，*阀门的开度调节流量来满足供水要求，工况与风机相似，*调节风门、风道档板或阀门的开度来调节风机风量，水泵流量的方法、称为节流调节，在节流调节过程中，风机或水泵固有特性不变、仅仅*关小风门、挡板或阀门的开度，人为地增加管路的阻力，由此增大管路系统的损失，不利于风机，水泵的节能运行。

00 Deck officer informed to reduce main engine speed to 100r/min, fire pump started to feed water, and all crew except the persons on watch for firefighting drills.

14点零分驾驶员通知主机减速到每分钟100转，消防泵供水，除值班人员外全体人员进行消防演习。

The water supply scheduling in the large scale and long distance artificial water channel is a very complex issue.

小 摘要：大型长距离人工输水渠道供水调度是一个非常复杂的问题。

Just about anything: about how to obtain a dog license, how to sign up for water service, what to do if your sewer clogs.

在各个方面，例如如何获得养狗执照，如何登记供水服务，如何处理下水道堵塞问题。

Municipal drinking water enters from the first level check valve, passes through drainage device, second level check valve, to supply water to the water downstream, part of medium enter the lower cavity of diaphragm of drainage device, to close the valve flap of drainage device.

市政饮用水从第一级止回阀进入，经过排污器、二级止回阀，向下游供水，一部分介质由导管进入排污器膜片下腔，使排污器阀瓣关闭。

Mine drainage pump required, in beneficiation, smelting and rolling process, the need to pump to the water supply first and so on.

矿井需要用泵排水，在选矿、冶炼和轧制过程中，需用泵来供水先等。

From analyzing the drip irrigation emitter types and choosing in experiment, the main conclusions are as follows: The best type of subsurface drip irrigation emitter is drip pipe. Under lower water press the stabilization discharge of orifice emitter in soil is three fifth of that in air, which can meet the request of subsurface drip irrigation.

通过对现有滴灌灌水器类型的分析及试验筛选，结果表明，内镶式滴灌管最适宜应用于地下滴灌，在低压运行时，孔口式滴头在土壤中稳定出流量为空气中的 3/ 5 ，基本可以满足地下滴灌的要求；在较高供水压力时，所选取的几种滴头基本上都可以用于地下滴灌。

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