If the ground-source heat pump are used in open systems, namely the use of direct extraction of groundwater and pumps refrigerant for heat exchange, and at suitable locations recharge or discharge.

如果地源热泵采用的是开路系统，即利用水泵直接抽取地下水与制冷剂进行热交换，并在合适地点回灌或排放。

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The foreground of multi-source utilization of rain water and flood, recharge and replenishment, water reuse, and the method of operation and scheduling rule of groundwater reservoir were established.

预测分析了济宁市未来时期雨水洪水利用、回灌补源、污水处理利用等多水源开发的前景，并对济宁市地下水库的调度运用进行了规划。

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According to the basic principle in uranium series disequilibrium, a calculating method for the mixing ratio of a three source recharge system of groundwater is raised.

在论述铀放射系不平衡原理的基础上，提出了地下水三元补给体系混合比的面积坐标算法。

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