前言：介绍了DR AST IC模型的七个评价因子：地下水埋深、含水层净补给量、含水层介质类型、土壤类型、地形坡度、包气带介质i的影响和含水层的导水系数。
The paper introduces seven factor of DRASTIC model: Depth of water table, Net recharge, Aquifer media, Soil media, Topography, Impact of Vadose Zone and Hydraulic Conductivity.
它对分析降雨（灌溉）入渗对地下水的补给过程和定量分析地下水入渗补给量、入渗补给系数具有重要价值。
The results will help the analyzing process of rainfall(irrigation)recharging groundwater, and also contribute to analyzing groundwater recharge and coefficients of recharge in a quantitative way.
它对分析降雨（灌溉）入渗对地下水的补给过程和定量分析地下水入渗补给量、入渗补给系数具有重要价值。
The results will help the analyzing process of rainfall(irrigation)recharging groundwater, and also contribute to analyzing groundwater recharge and coefficients of recharge in a quantitative way.
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