between these two aquifer systems is aquitard which is composed by mild sand clay and mild clay of mid Pleistocene series.
潜水含水层和承压含水层之间为中更新统大青沟组
质亚砂
、亚粘组成越流层。
between these two aquifer systems is aquitard which is composed by mild sand clay and mild clay of mid Pleistocene series.
潜水含水层和承压含水层之间为中更新统大青沟组质亚砂、亚粘组成越流层。
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