The component proportion of complex halide sphere keeps stable basically with the relative error< 5%.

Xylan in nature is a complex of many polysaccharides, and this makes it appears polymorphism and poly-sphere, therefore, it is necessary to classify xylanase of great variety.

Results indicated that the sedimentation of interacting particles is more complex than "hard sphere" case and interparticle potential affects the particles' settling heavily.