The result shows that the karst water circulation system in Xuzhou is complicated with different flowing patterns of fluent flow, converging flow, and dispersing flow.
结果表明：徐州市水文地质单元岩溶地下水循环系统是一个复杂的循环系统，整个系统既有畅流型，又有汇流型和散流型。
There are some problems in modelling karst water circulation using hydrological model as lack of information of groundwater distribution in karst system (black box or grey box).
由于岩溶地下水分布难以量测，岩溶水文系统多为黑箱或灰箱，采用岩溶水文模型量化其水循环过程常存在许多疑难问题。
There are some problems in modelling karst water circulation using hydrological model as lack of information of groundwater distribution in karst system (black box or grey box).
由于岩溶地下水分布难以量测，岩溶水文系统多为黑箱或灰箱，采用岩溶水文模型量化其水循环过程常存在许多疑难问题。
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