网络释义专业释义英英释义
... population pyramid人口金字塔 population size人口总数；人口规模 population structure人口结构 ...
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目的:调控群 二、 种群的基本特征 1、 种群的大小和密度 种群大小(Population Size):一个种群全体的数目多少。 种群的密度(Density):单位空间内某一种群的个体数目。
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control the population size 控制人口数量
Adaptive Population Size 自适应种群
fish population size 鱼类族群量
population size index 资源量指数 ; 种群大小指数
genetically effective population size 遗传有效种群大小
finite initial population size 有限初始群体大小
absolute population size 绝对种群大小
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种群数量 - 引用次数：17 参考来源 - 半自然条件下群体江豚的养护与行为观察 Observation on the Group of the ChangJiang Finless Porpoise and Conserved in Semi种群大小 - 引用次数：10 参考来源 - 秦岭山地油松群落特征及数量分类研究种群规模 - 引用次数：10
The population size is tending to decline which signified M. amoena species is in danger.3.
种群规模变小是物种趋向濒危的特征之一。
参考来源 - 天目木兰的保护生物学及遗传多样性研究居群大小群体大小 -
群体大小 - 引用次数：10
The results showed that the basic seedling,tiller number before winter,total tiller number and the population size all increased as planting density increased in ridge film mulching planting.
结果表明,垄沟覆膜栽培下,适当提高播种量可以增加冬小麦基本苗数、冬前分蘖数、总分蘖数及群体大小。
参考来源 - 垄沟覆膜栽培下密度和氮肥对冬小麦个体与群体关系的调控效应群体规模 - 引用次数：5Decrease of population size resulted in genetic drift,and weakened the adaption of population,then evolution capacity declined,which lead to be endangerous.14 Endangered A ziyuanensis was caused by the interaction of interior and exterior factors.
群体规模的不断缩小必然会导致遗传漂变,种群的适应能力变差,进化潜力衰弱,处于极度濒危状态。
参考来源 - 资源冷杉的濒危机制与种群保育研究种群数量 - 引用次数：5In China, they have been killed at large scale and the population size has decreased dramatically.
近年来,棕果蝠在国内被大范围捕杀,造成其种群数量急剧下降。
参考来源 - 两种果蝠微卫星位点筛选及通用性研究资源量 - 引用次数：2We studied the age and growth characteristics, estimated the annual population size and built Beverton-Holt model.
研究了鲇鱼山水库翘嘴鲌的年龄和生长特性，估算了翘嘴鲌的年资源量，并建立了B-H种群管理模型。
参考来源 - 鲇鱼山水库翘嘴鲌生长特性与种群管理研究 -
群体规模 - 引用次数：7
The original parameters such as population size,crossover probability and mutation probability values are based on the experience values.
原先的参数如群体规模、交叉概率、变异概率等都是在经验值的基础上设置的。
参考来源 - 遗传算法在频率指配问题中的应用研究 -
人口规模 - 引用次数：34
The Netherlands was a small country which had a large gap compared to France in the population size, land area and the preliminary development basis.
荷兰本是一个小国,其与同时期的法国相比,在人口规模、领土面积和前期发展基础上是有较大差距。
参考来源 - 金融国家的形成与发展 -
种群规模 - 引用次数：6
The experiments show that the proposed genetic algorithm has better performance than the Genetic Algorithm with Varying Population Size.
实验数据表明,该算法比变种群规模遗传算法具有更好的性能。
参考来源 - 复杂网络演化模型及拓扑优化研究 -
人口规模 - 引用次数：1
Study of population size hierarchy is the groundwork of the city planning. It is important to the population forecast of cities and urban system planning.
城市规模分布研究是城市规划中的一项基础性研究工作,对准确预测城市人口规模以及合理确定城镇体系结构具有非常重要的意义。
参考来源 - 期刊学术社区人口总数
·2,447,543篇论文数据，部分数据来源于NoteExpress
Population size
- abstract: In population genetics and population ecology, population size (usually denoted N) is the number of individual organisms in a population.
以上来源于: WordNet
双语例句原声例句权威例句
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Everything considered, heterogeneity and unusual behavior seem to be outcomes of large population size.
从各方面考虑，异质性和不寻常的行为似乎是人口规模庞大的结果。
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The law will give the Iraqi central government the power to distribute current and future oil revenues to provinces and regions, based on their population size.
该法律将赋予伊拉克中央政府权力，根据各省和地区的人口规模，将当前和未来的石油收入分配给他们。
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But this was largely a reflection of population size.
但这更多是一个人口数量的反应。
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While representation in the House is based on population size, all states are equally represented in the Senate.
VOA: special.2009.08.14
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So in a town that's the size of new Haven with a population of let's say 100,000 people in just the immediate New Haven area, there might be 20 of these instances of very severe form of polio per year, 20 crippled children would result.
在一个像纽黑文这么大的城市里,大约有十万人口,生活在纽黑文地区的人当中,每年可能就会有二十人,感染到这种急性传染病,可能会导致二十个孩子残疾
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The representatives are divided among the fifty states based on population size.
VOA: special.2009.08.14
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