The research supplies a new method for quantitative study of steady phreatic evaporation of sand-layer soil.
该实验为定量研究夹砂层状土壤潜水蒸发提供了新思路。
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Groundwater systems have shallow phreatic water-confined water system and medium layer confined water system.
地下水系统具有双层含水结构：浅层潜水——承压水系统和中层承压水系统。
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