To get an empirical relation with more theoretical and applicative value, the periods and their distribution of digital chaotic systems based on floating-point formats are studied in this paper.

Based on the experimental results, a semi-empirical relation is established for describing the variation of Theological parameter of the new mixture after coarse grains being added to the slurry.

Logic's two independences in the valid sufficient condition relation originated from sufficient conditional relation of experience, and in reverse it also serves empirical science.