Water resources systems of irrigation district are composed with surface water system and groundwater system.
灌区水资源系统由地表水系统与地下水系统构成。
It is a key problem to study the fuzzy optimizing multi-dimensional dynamic programming model for water resources systems.
水资源系统模糊优化多维动态规划模型是水资源系统优化研究中的一个重要课题。
The results of the case study slows that the model and the method can efficiently solve large scale optimization problems in water resources systems.
实例研究表明，文中提出的模型与算法具有计算速度快和占用内存量小的优点。
218 water user's associations were established, resulting in more sustainable operation of irrigation systems and utilization of water resources.
组建了218个农民用水者协会，使得灌溉系统的运营和水资源的利用更具可持续性。
The controlled use and systematic protection of natural resources, such as forests, soil, and water systems.
对森林、土壤及水利系统等自然资源的有节制的使用及系统的保护。
In China, the current systems of water right include the system of ownership of water resources and water in-taking.
我国现行的水权制度主要包括水资源所有权和取水权制度。
China's river systems suffer a similar predicament, with the Chinese Ministry of Water Resources reporting that 70 per cent of China's rivers and lakes are polluted.
中国的河流系统遭到同样的困境，而中国水利部报告显示，中国70%的河流和湖泊被污染。
Water resources allocation and dispatch of south-to-north water transfer is a very complicated systems engineering and there is no ready-made experience to be consulted at home and abroad.
南水北调工程水资源配置与调度是一项非常复杂的系统工程，在国内外没有现成经验可供参考。
Increase the recycled water systems, the promotion of urban regeneration, water reuse, water cycle supply and demand balance, and promote rational water resources, efficient use.
加大再生水系统的建设，推广城市再生水回用，平衡水循环供需关系，促进水资源的合理、有效利用。
Surface water, such as river or lake, and urban sewage are cooling and heating resources of heat pump systems, which are considerable and spectacular in amount.
江河、湖泊等地表水和城市污水是两类数量巨大、极引人注目的水源热泵冷热源。
The water resources of South Dakota consist of numerous streams, springs, lakes, and aquifer systems.
南达科他州的水资源包含无数的溪流，泉水，湖泊以及含水层的水。
The water resources of South Dakota consist of numerous streams, springs, lakes, and aquifer systems.
南达科他州的水资源包含无数的溪流，泉水，湖泊以及含水层的水。
应用推荐