Equations of transport model of leachate for porous media and double media are given. Generalized upwind scheme is used to solve the transport model of leachate and to eliminate numerical dispersion.

Based on analyzing the lettering annotation, the paper generalized its characteristics including subordination on position, dispersion on arrangement, hierarchy and classification on contents.

For generalized linear and nonlinear models, it is still a conventional hypothesis that observed data should have nominal dispersion, otherwise statistical inference would be more difficult.