群

In Chapter 3, by using the technique of finite dimensional approximation of Seiberg-Wittentheory, the equivariant K-theory and some other methods, we study the problem of topologicalrestriction when there are smooth groups acting on Spin 4-manifolds such as the alternatinggroup A_5, cyclic group Z_6 and symmetric group S_3 with actions of odd type, consequently weimprove Furutas 10/8 theorem under the condition of group actions.

第三章运用Seiberg-Witten理论的有限维逼近技巧和等变K-理论等工具，研究了Spin 4-流形X上分别存在光滑交错群A_5、循环群Z_6和奇型三阶对称群S_3作用时，X的拓扑限制问题，在群作用下改进了Furuta的10／8定理。

Theorem 7 Let G be a group, if every subgroup of G of prime order is contained in Z_∞,2 ∈π, every cyclic subgroup of G of order 4 is π-supplemented in G,then G will be nilpotent.

定理7设G是群，G的素数阶子群包含在Z_∞中，2∈π，如果G的每个4阶循环子群在G中π-可补，则G为幂零群。

The functional groups of insects in percentage were phytophagous 41.5%, decomposer 34.1%, and predaceous 9.3%.

湾瓦湿地生态系之昆虫生态功能群组成，植食性功能群占41.5%，分解者功能群占34.1%，捕食性功能群占9.3%。

Taking "Signal And System" as an object, this paper discusses the connotation, the fusion and the decomposition of the curriculum group construction, expecting a theoretical enhancement for cognition about the key curriculum group construction.

文章以《信号与系统》重点建设课程群为对象，对课程群建设内涵、课程群的融合与分解等问题进行了讨论，期望从理论上提高对于重点课程群建设的认知。

As a private mobile communication system, The digital trunkingmobile communication system was boomed in 1990's, and before this, the appliedprivate mobile communication systems in market are almost the analog systemwith analog voice and digital signalling. And there are no data referring to thesystem design and parameters chosen. It includes the wireless channel accessalgorithm of the mobile terminals, single base station capacity in large regional networks, link designing schemes between the switching control center and basestation as well as the study of the service quality for the multiple traffic. Theseindispensable parameters in design a digital trunking communication system arestudied in this dissertation and some instructive achievements can be got. To provethe correction of the theoretical study, the result was tested with the popularsystem of pan-European digital trunking communication system.

数字集群移动通信系统是九十年代中、后期兴起的专用移动通信系统的一种新体制，在此之前国际、国内市场使用的都是数字信令、模拟话音集群移动通信系统其涉及领域是模拟体制，对数字集群的系统设计的有关参数、方法等的选用及其性能表现并无成熟的文献可供参考，如移动终端的无线信道接入算法、大区组网单基站系统的容量、基站和交换控制中心间的链路设计和多业务种类的服务质量等都是数字集群基站子系统进行设计和开发必须解决的关键技术。

Dihedral group I_2(m and Coxeter group of group H_3, H_4 are noncrystallographic in irreducible finite Coxeter group.

根据分类，非Weyl群的不可约有限Coxeter群有二面体群I_2和群H_3，H_4。

Proved the feasibility that analyses haven industry with group theory, the trade situation that analysed group of industry of our country haven and distributinging administrative levels, mix with respect to mode of group of industry of our country haven of the structure build, put forward compose to build sth resembling a net of drift net of function of government of network of haven industry group, reasonable fixed position and perfect content to wait for a proposal, aim to enhance the market competition ability of our country haven further.

论证了用集群理论分析港口产业的可行性，分析了我国港口产业集群的行业状况和分布层次，并就我国港口产业集群模式和结构的建立，提出了构建港口产业集群网络、合理定位政府功能和完善物流网络等建议，旨在进一步提高我国港口的市场竞争力。

The eggbeater kick allows swimmers to work the inner thigh with less chance of injury, and the explosiveness of trying to climb out of the water helps build some of those QUICK muscles we sometimes miss with long training.

打蛋式的踢水方式可以让swimmer训练到腿部内侧的肌群且不容易导致运动伤害，而利用瞬间爆发力尝试冲出水面的动作可以帮助肌群作快速的收缩，而这些快缩肌群是在平常游泳训练中，无法训练到的肌群。

This experiment on the fermentation of multiple water samples for coliform determination of three phases: the beginning of the fermentation test, flat panel to verify the separation and recovery fermentation, fermentation of the final restoration coliform test there exist, then in accordance with the beginning of the fermentation tube tests positive the greatest possible number of investigations the number of coliforms coliform report the number of keys.

本实验中阐述的多管发酵法对水样中大肠菌群的测定包括三个阶段：初发酵试验，平板分离和复发酵验证，经最后复发酵试验验证实有大肠菌群存在后，再根据初发酵试验的阳性管数查大肠菌群最大可能数检索表报告大肠菌群数。

Many sufficient and necessary conditions for a finite group to be solvable are given, which generalize some known results.

另一方面，我们研究了Sylow-子群的某些特殊子群的半覆盖远离性对有限群结构的影响，给出了一些有限群为p-幂零和超可解的充分条件。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失