洪水时期，地下水与河水之间存在着水力联系。
Underground water has hydraulic relation with river water at the time of flood.
小官庄铁矿局部出现的奥灰水与区域岩溶水有水力联系。
Ordovician limestone water appearing in parts of Xiaoguanzhuang iron deposit relates with regional karst water.
河流和地下水之间存在着密切的水力联系和频繁的转化关系。
Close hydraulic connection and high frequent conversion relationship exist between river and groundwater.
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