The paper gets every sublevel recovery index of diversity structure parameter through multitude sublevel drawing experiment in the condition of diversity drift interval and drawing pace.

A 3dimensional model experiment was therefore carried out in lab with the intention of determining such constructional parameters as drift intervals and drawing pace to meet the mining requirements after the sublevel height has been up to 125?m.

Estimating of substitution number of nucleotide in DNA sequences is a basic statistic method of measuring evolution distance between genes,which is the base of researching molecular evolution of genes.

Estimating of substitution number of amino acids is basic statistic methods of measuring evolution distance between proteins,which is the base of researching molecular evolution of protein.

This paper comprehansively introduced the anti-overlapping techniques and the use in ployester filament production,and the take-up technique of step-thread-pitch was described in the meantim

Cluster analysis of karyotypies resemblance-near coefficient and evolutionary distance in twenty barrenworts;

Application of the karyotype evolutionary distance as an important parameter for animal taxonomy and evolution researches has been proposed.

[Conclusion] This was the first report on sequencing and evolutionary distance analysis of VP1 gene of ORV-NT.