灌区水资源系统由地表水系统与地下水系统构成。
Water resources systems of irrigation district are composed with surface water system and groundwater system.
据此，采用系统分析理论和方法，建立地表水和地下水系统分配优化模型。
The optimal models of surface and ground water system were set up based on the theory and method of water resource systems.
据此，采用系统分析理论和方法，建立地表水和地下水系统分配优化模型。
The optimal models of surface and ground water system were set up based on the theory and method of water resource systems.
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