当肥料颗粒接触潮湿土壤时，肥料便会吸收水蒸气，于是水溶养分开始透过包衣上的微孔缓慢而不断地扩散。
When the fertilizer particle contacts the moist soil, the fertilizer will absorb the vapor, and water dissolves nutrients begin to spread but constantly slow through the capillary on the capsule.
同时考虑了水蒸气在气泡壁上的凝结与蒸发以及水蒸气在气泡内相对惰性气体的质量扩散。
The water vapor evaporation and condensation at the bubble wall and the water vapor diffusion versus the noble gas inside the bubble are also considered.
结果显示，随着水蒸气活度的增加，膜内水分子簇尺寸增大，并在膜的微孔内产生多层吸附甚至毛细管冷凝，导致扩散系数迅速降低。
With the increase of mean cluster size(MCS)at different water activities, multi-layer sorption and capillary condensation occur, which lead to the diminution of diffusion coefficients in P…
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