本文讨论了四川盆地及盆周地区深部岩溶地下水形成条件，对深部岩溶地下水的循环模式进行了归纳总结。
This paper discusses the forming conditions of deep Karst groundwater in Sichuan basin and its surroundings. The cyclic pattern of deep Karst groundwater is summed up.
从整个地下水文地质单元特征来看，有其独特的发育形成条件。
From groundwater hydrological geological unit, it had a unique formation conditions of the development.
真正的乌木实在特定的地下水，土等自然条件下和适应的矿物质含量中，才能形成。
The ebony is really specific groundwater, soil and other natural conditions and to adapt to the mineral content in order to form.
研究表明，覆盖粘土层、岩溶及人工疏降地下水，是该地区岩溶塌陷形成的基本条件。
The research shows that the induced factors of karst collapse are the clay cap beds, the karst cave and the pumping of the groundwater in the area.
土壤中的化学污染物在自然条件下污染自然降解速度非常缓慢，形成对地下水的长期污染源。
The natural degradation speed of the pollution of chemical pollutants in the soil is very slow under a natural condition, so a long-time pollution source to underground water is formed.
土壤中的化学污染物在自然条件下污染自然降解速度非常缓慢，形成对地下水的长期污染源。
The natural degradation speed of the pollution of chemical pollutants in the soil is very slow under a natural condition, so a long-time pollution source to underground water is formed.
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