树

This paper presents a tabu search algorithm for constructing evolutionary trees based on maximum likelihood and parsimony criterion.

摘要 这篇论文当中提出一个以禁忌搜寻演算法来建构最大概率条件的演化树与吝啬法的演化树。

There was a particular tree of which we were not to partake, a tree of knowledge.

曾经有一棵我们未曾分享的特殊的树，一棵知识之树。

According to the partial correlation coefficient between the growth of forest and leaf nutrient,the N、 K content in leaf of clone S2 affected the growth of breast-height diameter mostly,and influenced the growth of tree height were Mn 、 P 、 N、 Cu content.The K、 N、 P content in leaf of clone S8 affected the growth of breast-height diameter mostly,and influenced the growth of tree height were Ca、 N content.

4从林木生长与叶片营养的偏相关系数大小来看，影响无性系S2人工林胸径生长的主要是叶片中N、K元素含量，而影响树高生长的主要是叶片中Mn、P、N、Cu元素含量；在无性系S8人工林中，影响胸径生长的主要是叶片中K、N、P元素含量，影响树高生长的主要是叶片中Ca、N元素含量。

While some phylogenetic programs (such as the Macintosh version of PAUP*) have excellent tree printing facilities, many programs do not have the ability to generate publication quality trees.

尽管一些系统进化程序(例如Macintoch版的PAUP*)具有极佳的树打印能力，但是很多程序没有产生出版质量的树的能力。

Both maximum parsimony and neighbor-joining trees of sect. Moutan were constructed with PAUP*4.0 program using the sequences newly obtained in this study and from GenBank.

同时根据8个种9份材料的GPAT基因片段序列，利用PAUP*4.0计算机程序建立了牡丹组GPAT基因的最大简约树和邻接树。

Similar tree topologies were recovered by both MP and ML trees generated based on unweighted analysis using PAUP*. The Eublepharidae and Gekkonidae were monophyletic.

构建的MP树和ML树有相同的拓扑结构，提示睑虎科和壁虎科都是单系的，刺尾虎亚科+具攀瓣的絮趾虎类与鳞脚虎类+无攀瓣的絮趾虎类为姐妹群关系。

On the base of the constructing phylogenetic tree using PAUP 4.0, MP and NJ (neighbor-joining) trees of diverse pectate and pectin lyases showed that pectate lyases from plant, pectin lyases from fungi and pectate lyases from bateria belong to different groups, respectively. The pectate lyase A of Aspergillus nidulans is more closely related to plant pectate lyases than to pectin lyase from fungi and pectate lyases from bacteria. The pectin lyase from Pseudomonas syringae is more closely related to fungi pectin lyases than other lyases.

构建的MP树和NJ树(neighbor-joining)显示：来自植物的果胶酸裂解酶、真菌的果胶酸酯裂解酶、细菌的果胶酸裂解酶分别可聚为一个独立的类群；相对于细菌果胶酸裂解酶和真菌果胶酸酯裂解酶而言，构巢曲霉的果胶酸裂解酶A和植物的果胶酸裂解酶之间有较近的亲缘关系；细菌Pseudomonas syringae的果胶酸酯裂解酶和真菌的果胶酸酯裂解酶之间的亲缘关系较近。

It was not much of a place, a small, modernized, stucco villa, with a hot pebbly garden, and in it a stone basin with torpid gold-fish, and a statue of Diana and her hounds against the wall.

但是使这小园生辉的是一颗巨大的玫瑰树。树已长过屋顶，几乎完全遮住了窗户。

In [2], Kirkland characterizes the limit points for algebraic connectivity of trees in terms of Perron values of certain positive matrices, and finds the four largest elements of limit points for algebraic connectivity of trees together with the corresponding branches.

Kirkland在文献[2]中用正矩阵Perron值的方法刻划了树的代数连通度的极限点，并给出了树的代数连通度的前四大值和达到这些数值相应的分支。

Utilizequadratic form and Perron value of bottleneck matrices, we study how the algebraic connectivityof a weighted tree changes under shifting its branches and changing its edge s weights and obtainmore entire information about algebrai.

利用代数连通度的二次型形式和瓶颈矩阵的Perron值，我们研究了当迁移或改变分支和变动一些边的权重时树的代数连通度的变化，得到了比过去更多的关于赋权树的代数连通度的结论。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。