土壤自由水
As to the same soil, when the water source doesn't have much free water and the water contents gradient is relatively greater, the ratio of water vapor transfer is much greater;
对于同一种土,水源端自由水含量较小,而含水量梯度相对较大,则气态水迁移量所占比西安建筑科技大学硕士论文例将越大;
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