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扩散事件
相关语句
  dispersal event
     Expression of the rapid dispersal event of the horse Equus at 2. 5 Ma B. P. in China
     2.5 Ma B.P.真马快速扩散事件在中国的表现
短句来源
  dispersal events
     The biologic events(Bonifay,1990)or the dispersal events(Repenning,1967,1980,1984,1987)may be the smallest and the most primary ones.
     生物事件 (博尼法埃 ,1990 )或扩散事件(雷佩宁 ,196 7;1980 ;1984 ;1987)可能是规模最小、层次最低的生物进化事件。
短句来源
     ON THE DISPERSAL EVENTS OF MAMMUTHUS DURING THE LATE LATE PLEISTOCENE
     中国晚更新世猛犸象(Mammuthus)扩散事件的探讨
短句来源
     (2) the present distributional pattern of the subfamily results mainly from dispersal events.
     (2 )亚科现在的地理分布格局除源自离散事件外,主要源于扩散事件
短句来源
  “扩散事件”译为未确定词的双语例句
     Eleven of 18 haplotypes were restricted to a single population, common haplotypes were found in two to four populations but no haplotype was found throughout Sino-Japanese waters, suggesting multiple colonization events followed by limited gene flow.
     18个单元型中有11个仅仅出现在一个种群中,其余则为2个以上的种群所共享,但没有发现一个单元型是所有种群所共享的,提示在全新世最后一次冰期江豚发生了多次的种群扩散事件。 然而,并没有发现北太平洋中日水域的江豚种群具有明显的系统地理格局。
短句来源
     The MC events consist of deposition,diffusion and re-evaporation events.
     Monte Carlo事件由沉积事件,扩散事件和脱附事件组成;
短句来源
     The Monte Carlo events consist of deposition, diffusion and adhesion-nucleation events.
     Monte Carlo事件由沉积事件、扩散事件、吸附成核事件组成;
短句来源
     therefore the generic distribution pattern of the monophyletic group maybe have resulted from both dispersal and vicariance events.
     属; (2)该单系群内的姐妹群既有重迭分布又有隔离分布,因此该单系群现有的地理分布格局很可能既源于扩散事件又源于离散事件;
  相似匹配句对
     Events
     事件
短句来源
     EVENT
     事件
短句来源
     Proliferation Mechanism of the Significant Emergent Events
     重大突发事件扩散机理研究
短句来源
     Discussion on Proliferation Mechanism of Significant Thunderbolt in Cities
     城市重大突发事件扩散机理刍议
短句来源
     Nonlinear Diffusion
     非线性扩散
短句来源
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  dispersal event
A major dispersal event follows the death of a reproductive.
      
We hypothesize that this peculiar occurrence might be due to an avian-mediated long distance passive dispersal event.
      
The possibility of a long-distance dispersal event occurring is also considered.
      
Genetic distance estimates indicate an African origin for humans about 200,000 years ago, a dispersal event out of Africa about 110,000 years ago, and a Mongoloid-Caucasoid split about 41,000 years ago.
      
Given molecular dates that suggest that the southern hemisphere group and Boreoeutheria diverged in the Early Cretaceous, a single trans-hemispheric dispersal event may have been of fundamental importance in the early history of crown-group Eutheria.
      
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  dispersal events
It shows that there were earlier dispersal events of non-oscine songbirds into Europe before the arrival of Oscines from the Australian continental plate towards the late Oligocene.
      
The shape of the pollen dispersal of individual plants is hard to determine since a very large number of plants must be monitored in order to track rare longdistance dispersal events.
      
Within-population genetic structure in Mediterranean pines may be affected by a number of post-dispersal events (e.g.
      
The relationships among observed haplotypes suggest a biogeographic scenario defined by climate, natal homing, and rare dispersal events.
      
However, occasional dispersal events over greater distances may generate sufficient gene flow to maintain genetic homogeneity.
      
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Two fossil species of Equus are discovered from the bottom of the Quaternary strata at Bajiazui in Qingyang, Gansu. Their geological age was 2. 5 Ma B. P. It is one of the earliest localities of Equus in Eurasia. The background of the rapid dispersal of Equus from North America to Eurasia at the Quaternary beginning was the advent of the glacial climate. As in the whole Eurasia, the earliest species of Equus were discovered from a lot of localities at 2. 5 Ma B. P. in China. These fossils showed various diversity...

Two fossil species of Equus are discovered from the bottom of the Quaternary strata at Bajiazui in Qingyang, Gansu. Their geological age was 2. 5 Ma B. P. It is one of the earliest localities of Equus in Eurasia. The background of the rapid dispersal of Equus from North America to Eurasia at the Quaternary beginning was the advent of the glacial climate. As in the whole Eurasia, the earliest species of Equus were discovered from a lot of localities at 2. 5 Ma B. P. in China. These fossils showed various diversity of peeles. In the same ecological regions, two species of Equus usually lived togther as well as Hipparion lived in the regions at the same time, which was the adaptive radiation caused by the rapid dispersal event under the sudden climatic change and provided the evidence of large animals for the theory of sympatric speciation.

通过对甘肃庆阳巴家嘴第四系底部地层中发现的2种真马化石研究得出,其地质年龄为2.5Ma B.P,是欧亚大陆发现最早真马化石的地点之一。认为:第四纪初真马从北美向欧亚大陆快速扩散的背景,是全球冰期气候的出现;中国与整个欧亚大陆一样,在一系列年龄为 2. 5 Ma B.P.的地点发现了最早的真马;这些化石显示出种级单元丰富的多样性,即在同一生态区域内常常同时有2种真马共同生活,还有三趾马共生;这是在气候突变条件下动物快速扩散事件产生的适应辐射,为区域叠覆成种理论提供了大型动物成种的证据。

There are many gradations of evolutionary events in the history of the Earth.The biologic events(Bonifay,1990)or the dispersal events(Repenning,1967,1980,1984,1987)may be the smallest and the most primary ones.On the basis of the work of Repenning(1987),there were 11 biologic events in the last 6.70 Ma.They occurred at 6.70;4.80;4.25;3.70;3.20;2.60;1.90;1.00;0.50;0.127 and 0.01Ma respectively.According to the viewpoint of XU Qin qi(1984),Repenning(1984)and Vrba(1985),the biologic events must have occurred near...

There are many gradations of evolutionary events in the history of the Earth.The biologic events(Bonifay,1990)or the dispersal events(Repenning,1967,1980,1984,1987)may be the smallest and the most primary ones.On the basis of the work of Repenning(1987),there were 11 biologic events in the last 6.70 Ma.They occurred at 6.70;4.80;4.25;3.70;3.20;2.60;1.90;1.00;0.50;0.127 and 0.01Ma respectively.According to the viewpoint of XU Qin qi(1984),Repenning(1984)and Vrba(1985),the biologic events must have occurred near the ends of the cold stages or the glacial cycles.The cycles are always correlated with the Great Years in Palaeoclimatology.Therefore,the biologic events must have occurred near the ends or at the beginnings of the Eventyears,ie,near the ends of Winters or in the Springs of the Eventyears(XU Qin qi,1998).In addition to the biologic events,there were many kinds of mass extinction events and radiation events in the world(Raup and Sepkoski,1982;Walliser,1986).There were also many units in the Geologic Time Scale,such as Era,Period,Epoch and Stage.All the units represented a complete cycle separately.So they were correlated with many gradations of the Great Years reaspectively,such as Megayears,Erayears,Periodyears,Epochyears,Stageyears and so on.In the history of the Earth,there were two Megayears(Paleozoic and Meso Cenozoic Megayears),four Erayears(Early Paleozoic,Late Paleozoic,Mesozoic and Cenozoic Erayears),and 12 Periodyears(such as Oldovician,Devonian and Triassic Periodyears).There were five mass extinctions in the Geologic Time in the world(Raup and Sepkoski,1982).All of them occurred near the ends of the Winters in the Great Years.The scale of the Permian Extinction was the greatest one among the five mass extionctions.Therefore the Permian Extinction occurred near the end of the Winter in Paleozoic Megayear.Megayear is the highest one of the Great Years.The scale of the Cretaceous Extinction was the second one. Therefore the Cretaceous Extinction occurred near the end of the Winter in Mesozoic Erayear.Enayear is also the second one.The scales of the other three Extinctions were less than the Permian and Cretaceous ones.Therefore they occurred near the ends of the Winters in Ordovician,Devonian and Triassic Periodyears respectively.Periodyears are the third ones lower than the Megayear and Erayear.The radiation events always followed the extinction events in the history of the Earth.There was a short interval between them (Walliser,1986).In sum,near the cnds of the Winters of the different gradations in the Great Years,there must have occurred the different gradations of Extinction events.While in the Springs of the different gradations in the Great Years there must have occurred the different gradations of radiation events or the explosions.So the Cambrian Explosion occurred in the Cambrian,i,e,the Sping of the Paleozoic Megeyear.And the Triassic Explosion occurred in the Triassic,i.e.,the Spring of the Meso Cenozoic Megayear.According to the Chinese Traditional Culture,spring,summer,autumn and winter have different effects on the living beings:spring, appearing;summer, growing;autumn, collecting;and winter, hiding.In the evolutionary history of the Earth,the spring appearance means that the appearances of new species (genera,families ,orders,classes and phyla) or the radiation events must have occurred during the springs in the Great years;and the winter hiding means that the extinction events must have occurred near the ends of the Winters in the Great Years.

在地球的历史上 ,存在着不同层次的生物进化事件。生物事件 (博尼法埃 ,1990 )或扩散事件(雷佩宁 ,196 7;1980 ;1984 ;1987)可能是规模最小、层次最低的生物进化事件。据雷佩宁(1987)研究 ,在过去的 6 70万年内 ,世界上曾发生过 11次生物事件。它们分别发生在 6 70、4 80、4 2 5、370、32 0、2 6 0、190、10 0、5 0、12 7、1 1万年前。根据徐钦琦 (1984 )、雷佩宁 (1984 )和芙尔芭 (1985 )的观点 ,生物事件总是发生在寒冷期或冰川旋回的末尾。在古气候学中 ,旋回乃是与大年相当的。所以生物事件总是发生在事件年 (徐钦琦 ,1998)的末尾或开始 ,即发生在事件年的冬末春初。除了生物事件外 ,世界上还存在着不同层次的集群绝灭事件和辐射事件(劳普和赛泊考茨基 ,1982 ;沃利斯尔 ,1986 )。在地质时代表中存在着代、纪、世、期等时间单位。它们都分别呈现为一个完整的旋回。所以这些时间单位分别相当于不同层次的大年 ,如宏年、代年、纪年、世年、期年等。在地球的历史上 ,共存在着两个宏年 (古生代宏年 ,中新生代宏年...

在地球的历史上 ,存在着不同层次的生物进化事件。生物事件 (博尼法埃 ,1990 )或扩散事件(雷佩宁 ,196 7;1980 ;1984 ;1987)可能是规模最小、层次最低的生物进化事件。据雷佩宁(1987)研究 ,在过去的 6 70万年内 ,世界上曾发生过 11次生物事件。它们分别发生在 6 70、4 80、4 2 5、370、32 0、2 6 0、190、10 0、5 0、12 7、1 1万年前。根据徐钦琦 (1984 )、雷佩宁 (1984 )和芙尔芭 (1985 )的观点 ,生物事件总是发生在寒冷期或冰川旋回的末尾。在古气候学中 ,旋回乃是与大年相当的。所以生物事件总是发生在事件年 (徐钦琦 ,1998)的末尾或开始 ,即发生在事件年的冬末春初。除了生物事件外 ,世界上还存在着不同层次的集群绝灭事件和辐射事件(劳普和赛泊考茨基 ,1982 ;沃利斯尔 ,1986 )。在地质时代表中存在着代、纪、世、期等时间单位。它们都分别呈现为一个完整的旋回。所以这些时间单位分别相当于不同层次的大年 ,如宏年、代年、纪年、世年、期年等。在地球的历史上 ,共存在着两个宏年 (古生代宏年 ,中新生代宏年 ) ,四个代年 (早古生代年、晚古生代年、中生代年、新生代年 )和 12个纪年 (如奥陶纪年、泥盆纪年、三叠纪年 )等。在地质历史上 ,世界上曾发生过 5次集群绝灭事件 (劳普和赛泊考茨基 ,1982 )

Sixty-six character transformation series were selected based on the morphological study of fifty-one species of the genus Ornativalva Gozmny worldwide. The cladistic analysis of fifty-one species was performed using PAUP~*4b10. The result shows that heluanensis-group is not a monophyletic group. Hence the modified partition of seven species-groups was proposed: the heluanensis-group includes O. heluanensis, O. longiductella, O. rufipuncta, O. zonella, O. roseosuffusella; the erubescens-group includes O....

Sixty-six character transformation series were selected based on the morphological study of fifty-one species of the genus Ornativalva Gozmny worldwide. The cladistic analysis of fifty-one species was performed using PAUP~*4b10. The result shows that heluanensis-group is not a monophyletic group. Hence the modified partition of seven species-groups was proposed: the heluanensis-group includes O. heluanensis, O. longiductella, O. rufipuncta, O. zonella, O. roseosuffusella; the erubescens-group includes O. levifrons, O. erubescens, O. lilyella, O. aspera, O. pulchella, O. ignota, O. frontella, O. arabica, O. sesostrella; the plicella-group includes O. plicella, O. undella, O. xinjiangensis, O. pharaonis; the tamariciella-group includes O. indica, O. misma, O. serratisignella, O. caecigena, O. macrosignella, O. heligmatodes, O. tamariciella, O. pseudotamariciella, O. kalahariensis, O. sattleri; the plutelliformis-group includes O. triangulella, O. antipyramis, O. singula, O. basistriga, O. plutelliformis, O. grisea, O. sieversi; the cerostomatella-group includes O. acutivalva, O. afghana, O. angulatella, O. cerostomatella, O. cornifrons, O. curvella, O. mixolitha, O. mongolica, O. novicornifrons, O. zhengi, O. zhongningensis; the ornatella-group includes O. ochraceofusca, O. ornatella, O. sinica, O. zepuensis, O. miniscula. Based on the result of the cladistic analysis, the relationships of fourteen areas were derived, which shows that the history of Old Mediterranean Region is complicated. It is also recognized that dispersal is an important process, through which the species of the genus Ornativalva achieved their geographic distribution.

基于对世界柽麦蛾属昆虫外部形态和外生殖器的形态学研究, 选择了66个性状演变系列, 通过PAUP*4b10软件对柽麦蛾属51种昆虫进行了支序系统学分析。分析结果认为 heluanensis 种团并不是一个单系群, 柽麦蛾属被重新作了7个种团的划分。在支序系统学分析的基础上, 柽麦蛾属昆虫的14个地理分布区域等级关系被重建, 显示出古地中海地区复杂的历史, 同时说明在该属分布格局中扩散事件客观存在。

 
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