单系

The historical development of the concepts of genealogy, phylogeny, monophyly and polyphyly is briefly reviewed.

历史地回顾了谱系、系统发育、单系、多系概念由来和发展。

The results indicate that when the plastic strain is smaller than 39 5%,plastic deformation has typicality of uniserial slipping.

单晶连铸铝线材在变量小于395％，性变具有单系滑移特征，当变量大于395％，才出现多系滑移特征。