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two communities
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  两类群体
     A diffusion phenomenon in the interaction of two communities is discussed through mathematical methods and it is pointed out that the kind of phenomenon is decided by the intrinsic growth rate.
     利用数学模型讨论社会经济现象中两类群体在互动中的扩散现象规律 ,指出这种现象是否保持取决于内增长率 .
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     At the equilibrium point, the contact rate is equal to the infection rate when the number of two communities are equal.
     在平衡点 ,当两类群体人数相等时 ,它们的接触率与感染率相同 .
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     The interaction of two communities is studied in the technique spreads phenomena. Two thresholds R 0 and R 1 are identified. If R 0<1, the technique spreads phenomena globally exponentially disappear.
     考虑在技术传播中两类群体的变化规律 ,得到两个阈值 R0 和 R1.当 R0 <1时 ,技术扩散现象全局指数地衰减 ;
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  “two communities”译为未确定词的双语例句
     On the basis of calculation of diversity and similarity index between every two communities,the results show that the highest index of diversity is community A_(2)(2.7423) and community C_(1)(0.3953) is the lowest.
     并对3洞的动物群落进行了研究,结果表明:多样性指数最高的是群落A2(2.7423),而最低是群落C1(0.3953);
短句来源
     The main results are reported as follows: (1) The seasonal changes in soil respirationin the two communities had similar dynamic patterns (both being of two peaks), ranging from 312.8 to1 738.9 mg C穖-2穝-1 and from 354.6 to 2 235.6 mg C穖-2穝-1 in the growing season for the steppe plotand the meadow plot respectively.
     主要结果包括:1)两个群落土壤呼吸的季节动态基本一致,均出现了两个峰值,其中草原群落和草甸群落土壤呼吸速率的变化范围分别为312.8~1 738.9 mg C·m-2·d-1 和354.6~2 235.6 mg C·m-2·d-1。
短句来源
     RESULTS:Through investigation to the 1 018 the elderly people aged over 60 years old in two communities of Xi'an city,the total incidence rate of depression was 26.7%,that of mild depression was 16.50%,that of middle to severe depression was 9.14%and that of severe depression was only 1.08%.
     结果:通过对西安市两个社区的1018个60岁以上老人的调查,抑郁总发生率为26.7%,其中轻度抑郁为16.50%,中、重度抑郁为9.14%,重度抑郁仅为1.08%。
短句来源
     The results were as follows:1.The transpiration from the meadow community was the highest(9.2 mm·d ̄(-1)),being the 2-3 times of the other two communities;
     草甸蒸腾最大(9.2mm·d ̄1).比另两种群落高2-3倍;
短句来源
     Results (1 ) In this two communities based population the prevalences of metabolic syndrome and its components were as follow: hyperglycemia 21. 63% ( diabetes 9. 21% , impaired glucose regulation 12. 41% ) , hypertesion 32. 95% , high triglyceride (TG) / low high-density lipoprotein cholesterol (HDL- C) 46.04%, central obesity 40.68% and metabolic syndrome 13.98% .
     结果(1)该社区人群中代谢综合征及其各组分的患病率分别为高血糖21.63%(糖尿病9.21%,糖调节异常12.41%),高血压32.95%,高甘油三酯(TG)/低高密度脂蛋白胆固醇(HDL-C)血症46.04%,中心性肥胖40.68%,代谢综合征13.98%。
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  相似匹配句对
     Two.
     二.
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     Two.
     二、末日意识
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     Stress of Adolescents: Data from Two Chinese Communities
     青少年压力:两个华人社区之比较研究
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     The similarity of floristic component in two communities are low.
     从属和种的区系成分分析来看,两地辽东栎群落的区系性质是温带的;
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     THE MANGROVE COMMUNITIES IN GUANGXI
     广西的红树植物群落
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  two communities
In this study, the occurrence of ataxic polyneuropathy was compared in two communities in Nigeria, one located in the endemic area and the other located outside the endemic area.
      
The study explores the ways in which ideologies of motherhood and femininity operate differently in the two communities and within groups of women with different migration and marital statuses.
      
This attempt, too, is best understood in the light of the difference between the two communities.
      
While the conversion generated considerable ill feeling at the time relations between the two communities were not radically affected.
      
Despite tensions and inequalities between the two communities inter-ethnic relations were shaped by a long-established structure of extensive social and political cooperation between Poles and Jews.
      
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The correlation and association between dominant species of the Dinghushan forest communities have been analysed by means of a 2×2 contingency table and calculation of X~2,and the t-test of correlation coefficients.These characters of community structure have also been showed evidently by the diagrams of species correlativity.Analysis of varance can be applied to compare the quantitative difference of the dominant species between two communities. The research showed that the correlativity between species...

The correlation and association between dominant species of the Dinghushan forest communities have been analysed by means of a 2×2 contingency table and calculation of X~2,and the t-test of correlation coefficients.These characters of community structure have also been showed evidently by the diagrams of species correlativity.Analysis of varance can be applied to compare the quantitative difference of the dominant species between two communities. The research showed that the correlativity between species depends on their age structures,life forms,densities,and succession stages of the communities they live in.Variant species showed the different correlativity characteristics in different community environments.The quadrat size effects the results of the meansurment. The methods used in this paper are suitable to the research of correlation and association between tree species in the evergreen broadlead forest of lweor sub-tropical.

本文对鼎湖山森林群落的乔木优势种群,应用2×2联表 X~2检验、相关系数t-检验,相关图解分析等方法,进行了种间联结测定和相关分析;并通过方差分析比较不同群落中优势种群间的分布差异。研究表明:种群间的相关性与种群的密度、年龄结构、生活型与生态幅度以及所在植物群落的演替阶段有关。取样面积的大小决定着种群联结的表征。本文应用的研究方法适用于南亚热带常绿阔叶林乔木种群相关性的研究。

Jiaozhou Wan is situtated on the south side of the Shangdong peninsula, There are more than ten rivers entering the bay and large quantities of organic matters are brought by them into the littoral zone.Many marine invertebretes and algae live in the bay and its littoral zone.The area of Jiaozhou Wan is 423M2,the area of littoral zone is about 1/4 of the area of Jiaozhou Wan,and most is sand-mud and mud beach.The Congkou littoral zone is typical sand-mud beach of Jiaozhou Wan.We have colleted 141 species invertebretest...

Jiaozhou Wan is situtated on the south side of the Shangdong peninsula, There are more than ten rivers entering the bay and large quantities of organic matters are brought by them into the littoral zone.Many marine invertebretes and algae live in the bay and its littoral zone.The area of Jiaozhou Wan is 423M2,the area of littoral zone is about 1/4 of the area of Jiaozhou Wan,and most is sand-mud and mud beach.The Congkou littoral zone is typical sand-mud beach of Jiaozhou Wan.We have colleted 141 species invertebretest in Congkou littoral zone.This is second part on the ecological study of the Intertidal zone of Jiaozhou Wan.In this paper,the communical structure and numbercal dlstrabution of domi-nantal species are described in deatial. There are two communites at the night zone: (1)Scopimera globosa community and (2)Glaucomya chimnsis Perinereis aibuhitensls community. There are three communites at mldzone:(1)Aloides sp.Hacrophthalmus japonicus community, (2)Ruditayes philippinarum Aloides sp.community and(3)Ruditapes philippinamm Musculus senhousei community.There are two communities at low-zone:(1)Rudi-tapes philippinarum Amphiura vadicola community and (2)Ruditapes philippinarum community.We have mathematical tretmented for the diversity of the communities by Fishers' index number of the diversity of the community and by Sanders' Rarefaction methodology in this paper.

本文是胶州湾潮间带生态学研究的第二部分。主要研究沧口潮间带的生物群落结构和优势种的数量变动等问题。 该潮间带可分为三个带。(1)高潮带:有两个群落,即圆球鼓窗蟹群落和中国绿螂-双齿围蚕群羝;(2)中潮带:确三个群落,即蓝蛤-日本大眼蟹群落,蛤仔-蓝蛤群落和蛤仔-(?)氏肌蛤群落;(3)低潮带:以蛤仔-滩栖蛇尾群落为主。 本文还对潮间带生物群落合成种类的多样性进行了分析。

In this paper, the log-series model for studying species-abundance distrib-tions of pest-natural enemy communities in paddy fields is discussed. Ecological efficiencies of several diversity indices are compared too.The log-series model is the ideal one which describes the species abundance distributions in the pest-natural enemy community in paddy fields. Analyzed data show that those two communities which follow a single log-series distribution respectively could be enlarged or mixed into a community...

In this paper, the log-series model for studying species-abundance distrib-tions of pest-natural enemy communities in paddy fields is discussed. Ecological efficiencies of several diversity indices are compared too.The log-series model is the ideal one which describes the species abundance distributions in the pest-natural enemy community in paddy fields. Analyzed data show that those two communities which follow a single log-series distribution respectively could be enlarged or mixed into a community which follows still a log-series model.The Shannon-Wiener index has stronger discriminant ability than others among different sites. But it appears insensitive for community compositingchanges in a large sample. The parameter a in the log-series model is more appropriate for the statistic describing community.

对数级数模式是描述稻田害虫-天敌群落种-多度分布的理想模式。资料表明两个呈单一对数级数分布的群落经混合扩大后仍为对数级数分布.Shannon-weaver多样性指数比其他指数有较强的判别力。但在大样本中,对群落组成的变化亦不敏感,采用对数级数分布的参数(?)作为多样性统计量较为合适。

 
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