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.
模拟实验表明，该模型能够较好地适应网格环境的动态变化，调整供给和需求的平衡。
Simulation experiments show that it fits the dynamic changes better in the grid environment and adjusts balance between supply and demand.
模型由商品市场和货币市场以及劳动力市场构成，体现了供给与需求双导向原则。
It consists of commodity market, monetary market and labor market and reflects the mutually orientation principle of supply and demand.
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