The concentration field of suspended sediment is calculated by using diffusion equation.

用剖面二维悬移质扩散方程求解浓度场.

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A novel method for measuring concentration field of pollutant diffusion by laser speckle is provided.

提出了一种利用激光散斑和散斑照相技术的污染扩散非定常瞬时全场浓度测量的新方法.

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