advection and diffusion的用法和样例：
- The advection and diffusion of the pollutans were basically reasonable.
- Furthermore, the thesis mainly shows the study on the advection and diffusion of soluble and conservative liquid chemicals in the water of Shanghai Port.
- On advection and diffusion in the mesosphere and lower thermosphere: The role of rotational fluxes
- The analysis includes the concentration ratio at the base of a GCL, advective and diffusive mass flux, and total accumulated contaminant mass through the liner per unit area.