研究包气带水的形成及运动规律不仅对阐明地下水的形成具有重要意义，而且是实现农业节水的关键。
To study the rule of formation and movement of aeration zone water, it not only has important significance for groundwater forming, but also is the key for realizing water saving in agriculture.
它具有很强的吸附能凝聚水分，使包气带水和潜水从液态、汽态向冻结层迁移富集，形成季节性固态地下水。
The high absorption energy makes ground water in air containing zone move towards the freezing layer and produce seasonal frozen perched ground water.
本文在阐述包气带水特征的基础上，指出了包气带水研究方向：一是包气带中土壤水的调控研究，二是水—气二相流数值模拟研究。
The article describes its characteristics and points out their study directions. One is how to control soil water in aeration zone, the other is numerical simulation study on water-gas flow.
包气带中的水会沉降到地下水位，只在矿物颗粒表面留下一层薄薄的水膜。
Water in the vadose zone drains down to the water table, leaving behind a thin coating of water on mineral grains.
土壤水分特征曲线是表征土壤中水的含量与势能之间的关系，是研究包气带土壤水分的保持和运移所用到的基本特性曲线。
Soil moisture curve is elementary curve that shows the relation between potential energy and the content of water soil and analyses retaining and transporting in soil water belt.
根据水动力学弥散理论建立农药在包气带中运移与转化过程的数学模型，评价农药使用对地下水环境的影响。
A mathematic equation was established to model the leaching and transformation of pesticides in root zone and assess impact of pesticide on groundwater.
西北荒漠化地区，包气带中的水分除来自大气降水外，还来自凝结水。
In desertification areas of northwest China, the water content in the unsaturated zone originates from atmospheric precipitation and from water condensation.
冻结滞水指因冬季的冻结作用在包气带冻土层内形成的季节性固态地下水。
The frozen perched groundwater is the seasonal soild state groundwater formed in the aeration frozen layer as a result of winter freezing.
基于VBA程序的理论分析表明，在排水早期，砂柱包气带中存在大量的水。
Theoretical analyses based on the VBA program show that there is a substantial amount of water in the vadose zone at earlier times of drainage.
基于VBA程序的理论分析表明，在排水早期，砂柱包气带中存在大量的水。
Theoretical analyses based on the VBA program show that there is a substantial amount of water in the vadose zone at earlier times of drainage.
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