Therefore, the central difference to deal with both the convectional and the diffusion term was adopted.

针对反向计算的如上特点，我们对对流项和扩散项均采取了中心差分的处理方式。

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For example, human skin's diffusion term is very high, whereas it's single scattering term is very small.

例如，人体皮肤的扩散来说是非常高，而它的单散射而言是非常小。

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Then the existence and uniqueness of weak solutions for a BSCB System with nonlinear diffusion term are established on 2-d bounded domains.

其次我们得到一类带有非线性扩散项的MBSC B方程组在二维有界区域上弱解的存在唯一性。

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