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evolution in
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  演化
     Study of Hydrogen Induced α/β Phase Evolution in N18 Zirconium Alloy
     N18锆合金的氢致α/β相演化研究
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     Structural Evolution in Fe-Si Binary Alloy under Far from Equilibrium Conditions and β-FeSi_2 Phase Formation
     远离平衡条件下Fe-Si合金的结构演化及β-FeSi_2相的形成
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     Paleoenvironmental Evolution in Dianchi Lake Area since 13kaBP
     13kaBP以来滇池地区古环境演化
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     Study of Hydrogen Induced Phase Evolution in N36 Zirconium Alloy
     N36锆合金的氢致α/β相演化研究
     Effect of AlSi7Mg alloy slurry microstructure evolution in semi solid zone on thixotropic deformation
     AlSi7Mg合金坯料在半固态区的结构演化对变形的影响
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  演化规律
     Structural evolution in undercooled Ni 40%Pb(mass fraction) hypermonotectic alloys was investigated systematically by employing the method of molten glass purification combined with superheating cycling.
     采用熔融玻璃净化与循环过热相结合的方法研究过冷Ni 4 0 %Pb(质量分数 )过偏晶合金的组织演化规律
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     DISCUSSION ON ‘STUDY ON PERMEABILITY EVOLUTION IN FAILURE
     关于“非均质岩石破裂过程渗透率演化规律研究”的探讨
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     This article use the distamce between density operators and Von Neumann en-tropoy to Study the state evolution in the two-photon Jaynes-Cummings model with the cavity field initially in a coherent state with a large average photon number
     用两个量子态的密度算符之间的距离并给合Von Neumann熵研究了在初始相干光场很强的条件下双光子Jaynes-Cummings模型(JCM)态的演化规律
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     STUDY ON PERMEABILITY EVOLUTION IN FAILURE PROCESS OF INHOMOGENEOUS ROCK
     非均匀岩石破裂过程渗透率演化规律研究
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     The photon statistical evolution in the system of the coupling two-level atoms interacting with squeezed coherent state light-field in a Kerr medium is studied by means of the quantum theory and in the interacting picture.
     在相互作用绘景中,采用全量子化理论,研究了充满Kerr介质的高Q腔中两个耦合二能级原子与压缩相干态光场相互作用系统的光子统计演化规律;
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  演化研究
     Study of Hydrogen Induced α/β Phase Evolution in N18 Zirconium Alloy
     N18锆合金的氢致α/β相演化研究
短句来源
     Study of Hydrogen Induced Phase Evolution in N36 Zirconium Alloy
     N36锆合金的氢致α/β相演化研究
     Study on Late Mesozoic Structural Evolution in Xinjiang Basin, Northeast Jiangxi Province
     赣东北信江盆地中生代晚期构造演化研究
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     Study on Spatial Structure Evolution in the Process of Regional Urbanization
     区域城市化进程中的空间结构演化研究
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     Investigation of the beam evolution in nonlinear optical lattice
     非线性光学格子中的光束演化研究
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  “evolution in”译为未确定词的双语例句
     Study on Soil Air CO_2 Concentration and Soil CO_2 Evolution in Farmland Soils
     农田土壤空气CO_2动态和土壤——大气界面CO_2释放的研究
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     Study on Molecular Phylogeny and Evolution in Chinese Domestic Geese
     中国主要家鹅品种分子系统进化研究
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     Changes of Soc in Agricultural Soils and the Temperature Dependence on C Minrealization and CO_2 Evolution in Paddy Soils
     农业土壤有机碳库的变化与土壤升温对水稻土有机碳矿化和CO_2排放的影响
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     Research on Complexity of Evolution in the Integrated Supply Chain Management System
     集成供应链管理系统动态演化的复杂性研究
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     The Neogene Deposition and Environmental Evolution in Southeast Longxi Basin
     陇西盆地东南隅新近纪沉积与环境演变
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  evolution in
Physical and chemical environments of abnormal vitrinite reflectance evolution in the sedimentary basins
      
These changes stimulated ethylene evolution in intact plants.
      
Contemporary data on the mechanism of biodegradation of aromatic hydrocarbons and biodegradation genes (genomic organization and pathways of evolution) in diverse groups of microorganisms have been reviewed.
      
The main principles of evolution in artificial systems were studied.
      
Multicellular organisms on our planet owe their rich evolution in many respects to the ability of this gene to protect cells from oncogenic transformation and harmful changes in DNA.
      
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The processes of the retreat of the West Pacific subtropical high from the mainland of China during Aug. 4-12, 1958 have been analysed. It is shown that the retreat first occurs in the layer of 200-400 mb and then propogates upwards and downwards, whereas, maximum changes occur at the 200 mb level. However, the contour fields below 500 mb suffer small change. This situation is related to the dynamical factors near the tropopause. It is also pointed out that the retreat of the subtropical high may be largely...

The processes of the retreat of the West Pacific subtropical high from the mainland of China during Aug. 4-12, 1958 have been analysed. It is shown that the retreat first occurs in the layer of 200-400 mb and then propogates upwards and downwards, whereas, maximum changes occur at the 200 mb level. However, the contour fields below 500 mb suffer small change. This situation is related to the dynamical factors near the tropopause. It is also pointed out that the retreat of the subtropical high may be largely caused by the marked changes of the meridional circulation and the easterly jet-stream which are produced by the development of the large circulation pattern. Further analysis is made on the physical mechanism of the retreat of the easterly jet-stream, the characteristic of the evolution in the structure of the high and the effect of the evolution on the retreat of the high.

本文对1958年8月4—12日中国大陆上西太平洋副热带高压减退过程作了分析。结果指出:它的减退是从200—400毫巴层次中开始,然后向上向下传递,最大变化发生在200毫巴层上,500毫巴以下高度场的变化是很小的,这是由于对流层顶附近的动力因子所决定的。文中还指出,大型环流发展所引起的经圈环流和东风急流显著的变动,是造成高压减退很主要的因素。本文还进一步分析了东风急流减退的物理机制和高压本身结构的演变特点,以及这种变化对高压减退所起的作用。

The peat-bogs in Mount Hsishan, Nanchang, is widely distributed. It is one of the typical peat-bogs in South China. For palynolo-gical study, the author has col- lected some samples from three boring cores, and has found pollen and spores of many species. In the assemblages, Pinus and Castanopsis are absolutely predo-minant in number, and there are also some of Liquidambar, Alnus, Eurya, Salix, Ilex, Quercus, myrica, Sapium, Cunninghamia and others. Herbaceous pollen and spores in assembla- ges are rare, and...

The peat-bogs in Mount Hsishan, Nanchang, is widely distributed. It is one of the typical peat-bogs in South China. For palynolo-gical study, the author has col- lected some samples from three boring cores, and has found pollen and spores of many species. In the assemblages, Pinus and Castanopsis are absolutely predo-minant in number, and there are also some of Liquidambar, Alnus, Eurya, Salix, Ilex, Quercus, myrica, Sapium, Cunninghamia and others. Herbaceous pollen and spores in assembla- ges are rare, and in a subordinate position, in which are mostly pollen of Gramineae and Compositae, and a certain number of pollen of aquatic plants. As to spores, Pteridium and Polypodiaceae are in large numbers. The data of the palynological assemblages indicate that the flora was evergreen forest of broad-leaved trees ever- geen forest of conifer, and with some few mixed forest of broad-leaved dediduous trees. The data of polynological analysis of Siyao Lake distinctly shows that there are four stages in the vegetative evolution in the district of Mount Hsishan in Holocene: first stage recorded the forest dominated by Castanopsis; second stage, the foresr dominated by Pinus; third stage, mixed forest dominated by Alnus and Pinus, fourth stage, mixed forest with some Castanopsis and Quercus. Inferring from the above mentioned fact, it is to be assumed that the age of the formation of peat-bogs in Mount Hsishan began from the Atlantic stage of Holocene.

南昌西山泥炭沼泽分布甚为广泛。是我国南方较为典型的泥炭沼泽之一。我们进行了三个钻孔的泥炭孢粉分析,找到种类众多的孢粉,孢粉组合中以松属(Pinus)和栲属(Castanopsis)花粉占优势,枫香属(Liquidambar〕、桤木属(Alnus)、柃木属(Eurya)、柳属(Salix)、冬青属(Ilex)、栎属(Quercus)、杨梅属(Myrica)、乌桕属(Sapium)、杉木属(Cunninghamia)等也有相当数量。草本花粉和孢子在组合中属于次要地位,草本花粉以禾本科(Gramineae)、菊科(Compositae)为主,水生植物花粉也有一定的数量。孢子是以蕨属(Pteridium) 和水龙骨科(polypodiaceae)占多数。孢粉组合反映常绿阔叶-常绿针叶和杂有少数阔叶落叶的混交林。洗药湖泥炭的孢粉分析,清楚地反映了全新世时期西山地区森林发展史具有四个阶段:第一阶段以栲属为主的森林,第二阶段以松属为主的森林,第三阶段以桤术属和松属为主的混交林,第四阶段混有栲属、栎属的松树混交林。从森林演替的历史看出,西山泥炭沼泽的形成开始于全新世的大西洋期。

The two mesial upper incisors of the Yuanmou Man(Homo erectus yuanmouensis)found in the summer of 1965 at a site about 500 meters northwest of Shang-na-bang,Yuanmou County in northern Yunnan indicate the first occurrence of a probably lateEarly Pleistocene man in China.In the past decade many Geologists,Palaeontologistsand Palaeoanthropologists had worked in this district.Although no new hominid ma-terial has been discovered in the interim,the stritigraphic horizon and the geological age of the human fossils,as...

The two mesial upper incisors of the Yuanmou Man(Homo erectus yuanmouensis)found in the summer of 1965 at a site about 500 meters northwest of Shang-na-bang,Yuanmou County in northern Yunnan indicate the first occurrence of a probably lateEarly Pleistocene man in China.In the past decade many Geologists,Palaeontologistsand Palaeoanthropologists had worked in this district.Although no new hominid ma-terial has been discovered in the interim,the stritigraphic horizon and the geological age of the human fossils,as well as that of the Yuanmou formation becomes clearernow;it is evident that the horizon which contains the fossil hominid remains belongsto the late stage of Early Pleistocene.It seems that the “Yuanmou Man” can make notonly crude stone implements,but also it is possible that they could use fire.One of the present writers(Hu)in his prilliminary report of the teeth publishedin 1973,pointed out that the teeth are comparable with those of Homo erectuspekinensis,therefore,belong to Homo erectus grade.However,these teeth in manyrespects,differ markedly from those of H.e.pekinensis.Thus,a new subspecies name,Homo erectus yuanmouensis Hu was proposed for it.Recently the present authors have made some observations on the Yuanmou Manmaterial with a view to show in more detail the morphological evolution in the char-acters of the mesial upper incisors in human.The inure important morphological features of the mesial upper incisors of Homoerectus yuanmouensis are briefly given below:1.The teeth represent probably those of a youthful male individual.2.They are quite massive,especially in the crown part.The crown is nearlytriangular in outline,with widely expanded incisive margin,and a spread index of141.9.3.The labial side of the crown is flat,except at its basal part which is moreconvex,with labial grooves,Tome's lines and area of shallow depression.4.The basal tubercle is prominent,and developed as a rounded eminence occupy-ing an area of about half of the lingual surfaces.The margin of basal tubercle isdivided into three finger-like prejections different in size.The one in the mesial is thestrongest and forms the lingual median ridge extending almost to the cutting ridge.5.The lingual surface shows a distinct shovel fossa which divided by the medianridge into two halves,the distal border being slightly stronger.The distal marginalridge does not come into contact with the basal tubercle,and separated from it by anotch.Numerous enamel furrows are visible in the lingual fossa.6.The transverse section at the neck part of the root is nearly elliptical,thinner in labiolingual diameter of root.Both the mesial and distal sides curve inward,especially on the mesial side,forming a curvature of cervical line(3.8)greater thanthat on the distal side(3.1).Comparative materials used to compare with the Yuanmou teeth include thefollowing:Hominoids of Pleistocene stage:Mesial upper incisors of Pongo fossils,Gigantopi-thecus,A ustralopithecus africanus(Sterkfontein),A.(Paranthropus)robustus(Swart-krans),Zinjanthropus,Homo erectus pekinensis,Homo sapiens fossils etc.;and Pongopygmaeus palaeosumatremis of Holocene stage,the large living anthropoids(Pongidae:Pan,Pongo and Gorilla),and some groups of Modern man(includes Northern Chinese,Javanese,Australian aborigine,Caucasians etc.).By comparing the teeth of the foregoing forms,it is concluded that the mesialupper ineisors of Homo e rectus yuanmouensis is quite distinet from those of anthropoidapes(including Gigantopithecus).They are certainly not of the same type.In com-parison with these of Homo sapiens,there exist prominent distinotions and can notassign the Yuanmou teeth to hominid teeth of the late stage.When they are compared with those of Australopithecus,it is decidedly different from these known Africanforms,and can not ascribe it to the genus of Australopithecus.Our teeth are in generalcomparable with those of Homo erectus pekinensis,though they differ more or less instructure.In certain respects the characteristics of difference between Homo erectus yuan-mouensis and H.e.pekinensis,are either more closely related to Australopithecus or toanthropoid ape.We now still consider the mesial upper incisors belong to Homo erectus grade.In consideration of the fact that the geological age of Homo erectus yuanmouensisis much earlier than that of H.e.pekinensis,and the complicate nature of morphologiccharacteristics that distinguish Homo erectus grade into an Early phase and a Latephase by some authorities,and certain aspects shown by some of Early phase of Homeerectus grade that reflect transitional traits leading from gracile Australopitheous toHomo erectus.Therefore,we believe that the mesial upper incisors of Yuanmou repre-sent the first definite finds of Early phase of Homo erectus grade in China.Thedifferences that distinguishes Homo erectus yuanmouensis from H.e.pekinensis in thecharacteristic features which represent its primitive trait in all probability and alsorepresent a type transitional from gracile Australopithecus to Homo erectus grade.

本文研究表明,元谋人上中门齿跟猿类(包括巨猿)有显著差别,不能归于猿类之列;它们跟智人类型的上中门齿也有显著区别,不可能是后期人类的牙齿。跟目前已发现的非洲南猿类型标本相比较,形态上的差异也是相当大的,看来还不能视作同类;而跟北京人同类牙齿相比较,基本形态是相当接近的,但也不能不看到,与后者尚有一些不同之处,不过,两者的差异程度远不及它们跟南猿类型牙齿的差异大。通过本文研究,在目前现有材料的基础上,我们认为元谋人上中门齿是我国南方迄今已发现的早期类型的直立人代表,它们形态上与北京人的不同处,反映了它们的原始性,反映了可能具有从纤细南猿向直立人过渡的特点。

 
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