between these two aquifer systems is aquitard which is composed by mild sand clay and mild clay of mid Pleistocene series.
潜水含水和承压含水为中更新统大青沟组的淤泥质亚砂、亚粘组成的越流。
between these two aquifer systems is aquitard which is composed by mild sand clay and mild clay of mid Pleistocene series.
潜水含水和承压含水为中更新统大青沟组的淤泥质亚砂、亚粘组成的越流。
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