This paper analyzes operating cost of five paper making factories, then builds wastewater COD cutting expense function in paper making factories. Finally relative conclusions and advice are proposed.

分析了五家造纸厂的污水处理设施的运行成本，对造纸行业构建了污水COD削减费用函数，提出了相关结论与建议。

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Taking minimizing annual operating cost as an object function, the method employed hereditary algorithm to get optimal compensatory places (non-node) and capacity.

该算法以年运行费用最小为目标函数，运用遗传算法求出最佳的补偿地点(非节点)和最优补偿容量。

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The financial organization in the country land is small and complete, which has resulted in the high operating cost and reduction of the credit aid function.

目前我国县域金融机构设置小而全，导致了经营成本较高以及信贷支持职能的弱化。

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