The integral N-S equation is regarded as a special diffusion equation and the pressure term, convective term are regarded as source terms.

将此N S方程看作一个特殊的扩散方程，将压力项与对流项看作是源项，得到一个积分方程。

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Based on the diffusion layer, variation and convective diffusion, the models were able to clearly predict the dissolution rates. However, the model for particles needed to be improved.

模型以扩散层概念和变化为基础，加入对流的影响，可清楚地描述溶出数据，但粒子溶出模型需要改进。

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