群系

同样的状况可能影响了Ekhingol群系与未分化早泥盆世岩石。

The same events might have affected the rocks of the Ekhingol formation and the undifferentiated Lower Devonian .

不同草原群系植物种多样性的比较研究

A Comparative Study on Plant Species Diversity in Different Steppe Formation

Moss和Tensley早期的研究是以群系作为单位。

Early work of Moss and Tansley used the formation as a unit .

本文研究了满足条件N的局部群系集合的代数性质，同时对于这类群类，给出了极小非-群的结构。

In this paper we investigate algebraic properties of the set of local formations which satisfy N , and for such formation we give the structure of minimal non group .

运用3S技术和野外数据作出了植被类型图，并对该流域植被进行了分类，该流域共有7个植被型，14个植被亚型，31个群系，植被类型多样性丰富。

There are 7 vegetation types , 14 vegetation subtypes , 31 formations . The diversity of vegetation is relatively rich .

利用[1]中定义的π-局部群系Fπ，得到了有限π-可解群的Fπ-覆盖子群的一些结果。

In this paper , we obtain some results of F π - covering subgroups of a finite π - solvable group by using the concept of π - local formation in .

采用样方法取样，依据重要值指标运用双向指示种分析（TWINSPAN）法，将山西中条山中段植被群系分成16个群丛。

62 samples collected in Midpiece of Zhongtiao Mountains were classified into 16 associations by Two-way Indicator Species Analysis ( TWINSPAN ) .

具体表现在：（1）土壤表层（0-30cm）的机械组成对植物群系的影响显著。

The mechanical composition of the soil surface ( 0-30cm ) a significant impact on the plant formations .

设F是包含超可解群系U的饱和群系，N是群G的可解的正规子群且G/N∈F，如果N的每个Sylow子群的极大子群在G中完全条件置换，则G∈F。

Let F be a saturated formation containing U.Suppose that G is group with a solvable normal subgroup N such that G / N ∈ F. If every maximal subgroup of Sylow subgroups of N is completely c-permutable in G , then G ∈ F.

运用群系理论讨论Sylow子群的极大子群和Sylow子群的二次极大子群，以及极小子群对有限群结构的影响。

The C-supplement condition on the maximal subgroup or the second maximal subgroup of Sylow subgroup and the minimal subgroup of G are used to study the structure of G by the theory of formations . The following results are obtained .

DCCA二维排序的结果与TWINSPAN分类结果较为一致，TWINSPAN分类所得到的14个群系在DCCA二维排序图上均有其相应的分布范围，但不同的森林植物群落间没有显著的分界界线。

The gathered groups of plant plots in the space of DCCA ordination are consistent with the result of TWINSPAN , all the 14 formations resulted from TWINSPAN have their corresponding distribution in the two-dimensional sorted map DCCA , but there are no obvious boundaries between different plant communities .

该区植被主要有5个群系纲：工针叶林，Ⅱ落叶阔叶林；

There are 5 main Formation classes of vegetation : ⅰ .

森林植被四个植被型，34个群系。

And the forests include 4 vegetation-types , 34 formations .

植被类型有52个群系。

Moreover , there are 52 Formations of vegetation type .

然而，呼吸道疾病中微生物群系的研究仍是个相对未知的领域。

But research on the microbiome in respiratory disease is relatively uncharted terrain .

群系的极小反例结构分析

The Analysis of the Structure of the Minimum Order Counterexample of a Formation

关于π-局部群系的几个结果

On Some Results of π - Local Formation

桂东北常绿阔叶林主要群系的比较研究

Comparative studies on the main formations of the evergreen broadleaved forests in northeastern Guangxi

主要植被类型有8个群系纲，包括27个群系和30多个群丛，顶极群落是常绿阔叶林。

There are 8 main formation classes , 27 Formations and about 30 Associations .

海南红树林群系及分子生物技术在其研究中的应用

The formation and the applications of molecular biotechnology on mangrove plants in Hainan Province

自然植被类型多样化，含7个植被型，15个群系。

The vegetation forms is various , including 7 vegetation types and 15 formations .

群系可以按其优势物种的特征划分为一些次级的群落类型。

Formations are often divided into subordinate community types characterized by their dominant species .

若干群系的一类新的刻划方法

A new method of characterizing some formations

关于P－局部群系的临界性问题

On p - local formation critical problem

群系中火成碎屑物的存在表明了火山酌的形成年代。

Periods of volcanism are indicated by the presence of pyroclastic material in the formation .

分流向生物群系的数据输入。

Shunt all data feeds to biomed .

自然植被分为4个植被型、10个群系和10个群丛。

The natural vegetation consists of 4 vegetation types , 10 formations and 10 associations .

结果表明：群系最大盖度与土壤盐分、地下水理化特征相关。

Results showed : the plant covering was correlated to the salt soil and ground water .

结果为：1.通道县境内植被可分为7个类型，包括约27个群系；

There are 7 types of vegetation in the county , including almost 27 formation types .

秋茄群系；我国旱生植物的形态解剖学研究

Avicennia marina ( 2 ) Form . A Review on the Phytotomy Research of Xerophytes in China