在光线传播的简化过程中，产生了多重散射和单向散射两种理论。

There are multiple scattering theories and single scattering theories in the process of light propagation.

youdao

在光线传播的简化过程中，产生了多重散射和单向散射两种理论。

There are multiple scattering theories and single scattering theories in the process of light propagation.

youdao