Phylogenetic tree

The Methods of Constructing Phylogenetic Trees with DNA sequences;

利用DNA序列构建系统树的方法

Annotations and comments on new phylogenetic trees of land plants

陆地植物新系统树之诠释与简评

The genetic distance and phylogenetic tree between Chinese Hans and other populations were estimated by using DISPAN and PHYLIP software.

使用DISPAN软件及PHYLIP软件计算不同群体间遗传距离并绘制系统树。

Unweighed pair-group method of with arithmetical averages (UPGMA) cluster analysis was used to construct a dendrogram and to estimate the genetic distances .

采用UPGMA构建系统树图进行聚类分析和计算遗传距离。

In this paper, the chain forms of L-E and N-E have been developedinto tree systems,Concepts of“empty body”and“void road” are introduced.

本文把单开链形式的Ｌ－Ｅ法和Ｎ－Ｅ法动力学方程推广到树形系统，引进了“虚体”、“虚路”等概念，在此基础提出了“分路”思想，这种方法具有建模效率高，分析难度低，适合于计算机编程等优点，是一种处理树系统动力学的好方法。

The cut-off joints constraint equation is one of the most important parts in the multi-body system without tree structure program.

多体系统动力学从非树系统派生出树系统的计算需要进行切断铰的处理。