diffusion flow meaning in English

扩散流

The paper enlarges the domain of using the method of variable separation with addition , and beneficially tries to obtain analytical solutions of complicated problem , such as 2 - d steady incompressible viscous gas diffusion flow field
拓展了加法分离变量法的适用领域，并对二维定常粘性气体不可压缩扩散流场这类复杂问题的解析求解进行了有益的尝试。
By using the new method of variable separation with addition , semi - analytical solutions of 2 - dimensional ( 2 - d ) steady incompressible viscous gas diffusion flow field are obtained in the paper , and suitable conditions are discussed
摘要运用加法分离变量法，解析求解了二维定常粘性气体不可压缩扩散流场，得到了几组空气流场有源汇和无源汇情况下扩散流场的半解析解，并分析了其适用条件。