The results show that the retardationcoefficient is negatively related with transport distance and diffusion depth of these nuclides.
结果表明：在其它条件相同的情况下，迟滞系数与这三种核素的迁移距离、扩散深度成负相关关系。
2
The key to establish model and predict lies in the determination of model parameters, which include generally dispersion coefficient and retardation factor.