水是由亲水性的离子化通道扩散透过膜，而乙醇是由亲油性的高分子无定形区扩散透过膜；
Water diffusion is localized in the hydrophilic ionic region formed by the ionized groups, whereas ethanol diffusion is localized in the hydrophobic amorphous network of the polymeric membrane.
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.
方法采用V-C水平扩散池，以透皮速率为指标，研究HST贴剂在离体人皮中的透过性。
Methods Using V-C diffusion cells, the permeability of HST from patch through the skin of human and SD rat was studied.
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