primal horde stage

Reconstruction of protoliths of metamorphic rocks and tectonic setting of the Haiyuan Group in the Haiyuan in the eastern segment of the North Qilian Mountains, China.;

北祁连山东段海原一带海原群变质岩原岩恢复及其构造背景

Within plant communities, these concepts include environmental factors, seed re-immigration, niche differentiation, balanced competition, species-pool, regeneration niche, coexistence of ecologically similar species and the null community.

植物群落的物种共存主要介绍与环境、种子再迁移、生态位分化、竞争平衡理论、种库假设、再生生态位等有关的几种假设、生态学上相似种的共存及“原”群落概念等。

In terms of lithostratigraphic, biologic and paleomagnetic features, the Quaternary lacustrine sediments were renamed the Yanyuan Group, which can be divided into three formations.

6m)河湖相岩石地层、生物地层和古地磁等的研究,将第四系河湖相层新命名为阳原群,进一步划分为3个组,即下更新统泥河湾组(深200。

In this paper, we prove that if G is a primitive group when it acts on Ω ={1, 2,…,n} (n>8) and (1,2) (3,4)∈G, then An≤G.

本文证明了：若Ｇ是集合Ω＝（１，２，…，ｎ）（ｎ＞８）上的一个本原群且（１，２）（３，４）∈Ｇ，则Ａｎ≤Ｇ。