In this paper,based on the non-equilibrium system as the equilibrium system,the free energy flow density and the free energy reduction rate are calculated and discussed for the irreversible processes of the material transportion.

On the basis of the criterions of stability for negative energy spectrum systems combined with the specific function of free energy density for white dwarf stars, the stability of white dwarf stars (or general negative energy spectrum systems) have been analysed.

Analysis on the free flow speed on the double-lane highway and its influence;

The freeness packing density changes of disperse particles system with coarse and fine particles made by roundish wimble crusher were researched to discuss the character of dense packing structure of refractory products and to obtain the better particle packing density.