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。

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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。

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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。

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They displace people from modern resources, like clean water and sewage systems, that prevent infectious disease from spreading.

FORBES: The Tsunami's Impact On Public Health

Earth resources: next to turbidite systems, also contourites may generate well-sorted deep-water sands.

UNESCO: EARTH SCIENCES FOR SOCIETY

And if Afghanistan's desperately degraded agricultural systems, particularly its use of water, were ever to be modernised, the violent tussle for resources might end anyway.

ECONOMIST: Modern politics meets ancient grievances