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major populations
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  主要种群
     The interspecific connectivity of major populations in 3 a,13 a and 25 a Hippophae rhamnoides communities in hilly and gully regions of the Loess Plateau were comparatively examined by quadrat investigation and PC-run variance analysis ,X2 test,and concurrence-percentage computation.
     采用样地调查法,并通过方差分析、X2检验及共同出现百分率PC计算,对黄土高原丘陵沟壑区经过3a、8 a、13a、25a发育的沙棘群落中主要种群间联结性进行了比较研究。
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     Study on the spatial pattern of major populations in the needle and broad-leaved mixed evergreen forest in Niumulin Nature Reserve Zone of Fujian Province.
     福建省牛姆林自然保护区常绿针阔叶混交林主要种群空间格局研究
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     Distribution Patterns of Major Populations in Achnatherum splendens Communities of Qinghai Lake Area
     青海湖地区芨芨草群落主要种群分布格局研究
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     An area typical of the crossed climatic zone of the loess plateau was chosen to study the niche widths and overlaps of major populations in arbor and shrub layers of six Pinus tabulaeformis communities still under tending with the tending duration as one resource dimension and the important vales of the species as the apparent eigenvalues on the resource dimension.
     选择黄土高原气候交错带的典型地段,将封育年限作为一维资源状态,以物种的重要值作为资源位上的表征特征,对6个封育年限内的油松群落乔木层、灌木层的主要种群生态位宽度和生态位重叠进行了分析,结果表明:多数种群的生态位宽度较窄,生态位宽度较大的种群,生态位宽度排序与其重要值排序并非一致;
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  “major populations”译为未确定词的双语例句
     Results NK cells in PBMCs could be divided into two major populations, CD56 bright and CD56 dim, based upon the expression of CD56 molecules.
     结果根据CD56分子表达密度的不同,将人外周血中NK细胞分为CD56bright和CD56dim两大亚群。
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     Conclusions 1.mHCN2 and mHCN4 represent the major populations of total HCN mRNA in MSCs.
     结论 (1)MSCs 起搏电流基因表达以 mHCN2和 mHCN4为主;
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     Effects of Mowing Frequency on the Energy Standing Crops of Major Populations in a Leymus chinensis Steppe of Inner Mongolia
     不同频次刈割对羊草草原主要植物种群能量现存量的影响
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     The major populations of infiltrating cells are macrophages and lymphocytes . Therefore, pancreatic islet immune cell infiltration may be a crucial step in the pathogenesis of type 1 diabetes.
     因此,免疫细胞从外周血液游走到胰腺组织并浸润胰岛是1型糖尿病发病机制中的一个关键步骤。
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     Clustering analysis showed that Miao and Buyi cluter with the southern Han and Mongol, Man, Hui and Tibetan cluter around the northern Han, suggesting that the Chinese nation comprises northern and southern two major populations.
     聚类分析表明,苗、布依与南方汉族聚类,蒙、满、回、藏与北方汉族集群,提示中华民族包含南北两大群体。
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  相似匹配句对
     Analysis on Combining Ability of Major Characters in Maize Populations
     美国玉米群体主要农艺性状的配合力分析
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     The major results indicated that the genetic diversity of the five populations in T.
     结果表明,中华鳖的遗传多样性较丰富。
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     Choose the major
     选专业不要“雾里看花”
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     The major conclusions are:
     具体来看,其主要结论为:
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     populations of H.compressa (L.F.)
     在同一栽培条件下 ,对采集自四川省各地区的 2 2个野生扁穗牛鞭草 [Hemarthria .compressa (L .F .)
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  major populations
The 20 local populations of China may represent nearly all major populations in China.
      
Trace metals were connected with two major populations of suspended particles, identified by using the recovery ratio for two different leaching reagents, namely 0.5 N HCl and 1:1 hot aqueous HNO3.
      
Major populations of Gelidium may be a potential source of high quality bacteriological grade agar.
      
In order to elucidate the genetic relationship and the origin of the two major populations, allozymic characters of the specimens from 21 localities in Japan and China were compared.
      
The intraspecific structure of major populations of the walleye pollock Theragra chalcogramma from the northwestern part of the Bering Sea was studied.
      
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This article introduced a method which applied the theory of "Multiple objective decision making" to optimal design for major population parameters of missiles. The mathematical model for having passive homing system missiles built up. Variables are the thrust to gravity ratio; the load of wing; proportional coefficient in passive trajectory. Taking the gravity of missile and terminal distance from target as objective functions, the optimal design was choosed. The method can be refered in the general design...

This article introduced a method which applied the theory of "Multiple objective decision making" to optimal design for major population parameters of missiles. The mathematical model for having passive homing system missiles built up. Variables are the thrust to gravity ratio; the load of wing; proportional coefficient in passive trajectory. Taking the gravity of missile and terminal distance from target as objective functions, the optimal design was choosed. The method can be refered in the general design of missiles for determination the major.

本文介绍一种应用多目标决策理论优选空对空导弹总体主要参数的方法。针对具有被动式自动导引系统的导弹建立了数学模型。设计变量为导弹的推重比、翼载和被动段的比例导引系数。以导弹重量和脱靶量为目标函数,选出一个最优的方案。此方法可供在导弹总体设计工作中确定导弹总体主要参数时参考。

Vast in territorial expanse and with different conditions of physical geography across the land, China shows great unevenness in the distribution of population and resourcer.The whole country is divided into eight major population regions.The Liaoning-Jilin-Heilongjiang Region is represented as an area with higher mechanical growth rates in population development, greater population-bearing capacity, and substantial potential for accomodating immigrants. The Lower Huanghe Region is given...

Vast in territorial expanse and with different conditions of physical geography across the land, China shows great unevenness in the distribution of population and resourcer.The whole country is divided into eight major population regions.The Liaoning-Jilin-Heilongjiang Region is represented as an area with higher mechanical growth rates in population development, greater population-bearing capacity, and substantial potential for accomodating immigrants. The Lower Huanghe Region is given credit for being the cradle of Chinese civilization, where, in spite of its poorness in water resources, a flourishing population has been maintained since ancient times. The Middle-Lower Changjiang Region is noted for its abundant natural resources, by which the maximum load of population is sustained. The Southeast Coastal Region is shown to be the home country of tens of millions of overseas Chinese, the "Gold Coast" in which lie China's first four special economic zones, and a window opening to the outside world, the population development being connected with these conditions. The Sichuan-Guizhou-Yunnan Region is characterized by its unevenness in population distribution, epitomizing the distribution of China's population as a whole; for example, in Sichuan 50% of its land supports 96% of its population and in Yunnan and Guizhou Provinces the numerous small plains, which support 90% of the population, account for barely 1% of the region in area, and again the Chengdu plain of Sichuan with only 1.1% of the province' area has a population density of over 800 people per sq km,higher than the densities in the Changjiang and Zhujiang deltas where the levels of resources are almost as high a,s in Chengdu, hence the region can be regarded as creating a wonder in sustainig superhingh densities with limited resources. In the Shanxi-Shaanxi-Gansu-Ningxia Region, where population development has reached its saturation point in consideration of the population-bearing capacity of the agricultural resources, the loess plateaus suffer great loss of water and soil, causing people there to have a low standard of living and peas- ants' consumption level to be the Jowest (except in the Qinghai-Xizang Region) , but this region has great potentialities in industrial resources, its coal reserves coming first on the national list. The Mongol-Xinjiang and Qinghai-Xizang Regions are characterized by their national minorities in clusters, sp-arseness of population, richness in energy resources (esp. oil and coal) , and cultivable land resources.Considerable space has been left for the analysis of chain relations between population and economic development in the Liaoning-Jilin-Heilongjiang Region. History of local population development shows that in 1953 the region had a population of 43.75 mil, accounting for 7.4% of the national total,that in 1982, 91.31 mil, or 9.03% of the national total, and that during this period the population increased by 110%, the weighted growth being 1.64% on a nationwide basis.The region has 247.18 mil mu of arable land resources, of which Liaoniing takes 22.8%, Jilin 24.6%, and Hailongjiang 52.6%. Heilongjiang has a lot of rain, and after meeting the needs of 130 mil mu of arable land, it has a balance of 4,400 mil m3 of water resources. It is the most ideal place in China to be repeopled with a certain size of immigrants.Since the Liberation in 1949 the population in the region has increased by 110%, the gross industrial product by 405%,the agricultural product by 390%, and the total grain yield by 150%.In industry the region stands out in the complete range of types and categories, in the rationalization of placement, in the advanced technology, and in the high rate of development.In 1982 the region's yield of raw coal reached 100 mil tons, making up 15.11% of the national total, and ranking third among the eight regions; of crude oil 59.1862 mil tons, accounting for 57.96% and ranking first on a national basis;of electricity 56,100 mil kwh,holding 17.13% and the third place on the national list, With regard to transportatio

作者划分全国为八个人口大区,对各大区的人口分布特点、人口和经济发展的关系,人口与经济区规划的特点作一中观经济学的理论和现实分析。

The species richness, diversity, evenness and ecological dominancy of forest communities on Yueliang mountain and Taiyang mountain were studied in this paper and compared them with the other similar forest communities in Guizhou province and then analyse the difference and causes among these forest communities. The character of the species-abundance distribution of forest community is discussed and three species-abundance distribution types are divided. The distribution pattern, niche breadth and niche overlap...

The species richness, diversity, evenness and ecological dominancy of forest communities on Yueliang mountain and Taiyang mountain were studied in this paper and compared them with the other similar forest communities in Guizhou province and then analyse the difference and causes among these forest communities. The character of the species-abundance distribution of forest community is discussed and three species-abundance distribution types are divided. The distribution pattern, niche breadth and niche overlap of major population are determined and the ecological analysis are presented in the paper.

本文研究了月亮山、太阳山森林群落的物种丰富度、多样性、均匀度和生态优势度,探讨了主要森林群落的种—多度分布特征,并进行了类型划分和主要种群分布格局、生态位宽度、生态位重叠度的测定。

 
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