Abstract
In this paper, the particle packing structures of various industrial powders, especially the estimation model of their radial distribution function was presented by the introduction of a new conception "particle density original function" and the validity was discussed.
As a result of it, it is pointed out that the new conception indicates a new, effective and statistical stand-point to elucidate the particle packing structure of powder particle system, in which component particles make a random movement or they are in stationary state, and has a high applicability to various industrial powders.
