This article has given an model analysis to the fission of small enterprises caused by the loss of human resourses and to the inner mechanism of fission developing,and actually reveals th.

The article introduced one kind of new project building material——biological modelling crack from cicatrization concretes, this material characteristic, function, when the concretes material presents the crack the partial fluid core textile fiber or the capsule burst, cohere the liquid flow to leave the permeating crack, coheres the fluid to be possible to cause the concretes to recover the sum.