水资源系统工程是应用系统工程的方法对水资源进行合理的开发利用，包括对水资源的规划、治理、控制、保护和管理。
文章用系统工程的理论和方法，用系统模型和模拟的方法，分析系统内水资源的供给与需求。
Using system engineering theory and method, system model and simulation method, the paper analyses the conflict between supply and demand of water resources within the system.
并结合石化企业的具体情况，用系统工程的分析方法，深入研究节水和水资源化的方法和途径。
In combination with present situation, the way and the method about save water and reuse of wastewater were researched deeply, by means of approach of system engineering.
城市水资源开发是一项庞大的、复杂的系统工程。
The development of water resources of the cities belongs to a huge complicated system engineering.
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