Underground pipe networks and other urban infrastructure were improved.
推进地下管网等城市基础设施建设。
The optimization of sewage pipe networks is one of the engineering optimization.
污水管网优化设计是工程优化中的一种。
In the paper, a new method of pipe networks analysis using a nodal energy grade method is developed.
本文提出了配水管网水力计算中的节点水头法。
In addition, a pipe network description language for water supply system is designed to locate pipe networks in city terrain map.
给出一个管网系统(供水)的管网图形描述语言，使管网系统能快速准确地定位于地形图上。
In drip irrigation system, the most effective length has great influence to the distribution and design of the system pipe networks.
滴灌系统中毛管的最大有效铺设长度对滴灌系统管网的布局和设计影响极大。
Waterflood system efficiencies are made up with the average operation efficiency of motors, water injection pumps and pipe networks.
注水系统效率由电机平均运行效率、注水泵平均运行效率和管网运行平均效率组成。
The differencing linear method in the calculation of pipe networks is given. A calculation example shows the feasibility of the method.
从管网计算的基本方程出发，给出流量法的一种新方法——差分线性化法，并通过实例计算说明了该方法的可行性。
Water supply system is a complicatedly dynamic nonlinear system, it is difficult to simulate by using one or several explicit functions in pipe networks.
由于供水系统是非常复杂的动态非线性系统，在实际管网的运行中，很难以一个或几个统一的显式函数关系描述管网的工况。
This paper describes how to apply double-coded self-adaptive genetic algorithms based on gravity to supply water to optimize the design of pipe networks.
介绍了如何应用双重编码的自适应遗传算法对依靠重力供水的环状管网进行水力计算的优化设计。
By little investment a significant economic benefits was made through technical improvement on parallel connection of no. 1, no. 2, no. 3 compressed air pipe networks.
通过小投入，对1线、2线、3线空压机系统并联改造，实现1 - 3线系统供气，取得较大的经济效益。
In pipe networks "growth ring" is an important factor to cause secondary pollution, so clearing the "growth rings" will help improve water quality and the capacity of pipes carrying water.
管网中的“生长环”是造成二次污染的重要原因，清除“生长环”有利于提高供水水质和管道通水能力。
Based on this, a computer program was made up and the practical simulation analysis was carried out for the local pipe networks in the gas fields of Sichuan, a satisfactory result being obtained.
以此为基础，编制了计算机程序，对四川气田局部管网进行了实际模拟分析，获得了满意结果。
The application of graph theory, dynamic programming, neural networks, MCST method, constrained derivatives, etc. to pipe network programming were recommended in details.
详细介绍了图论法、动态规划法、神经网络法、MCST法和约束导数法等在城市天然气管网规划中的应用。
The application of graph theory, dynamic programming, neural networks, MCST method, constrained derivatives, etc. to pipe network programming were recommended in details.
详细介绍了图论法、动态规划法、神经网络法、MCST法和约束导数法等在城市天然气管网规划中的应用。
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