between these two aquifer systems is aquitard which is composed by mild sand clay and mild clay of mid Pleistocene series.
潜
层和承压层之间为中更新统大青沟组的淤泥质亚砂
、亚粘组成的越流层。
层between these two aquifer systems is aquitard which is composed by mild sand clay and mild clay of mid Pleistocene series.
潜层和承压层之间为中更新统大青沟组的淤泥质亚砂、亚粘组成的越流层。
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