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分布区     
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  distribution area
     The distribution area of Mongolian wild ass is about 0.14 million km2 (40°20′~46°40′N,85°40′~ 107°30′E), about 700~1500 m in altitude, with a population size less than 200 0. Tibetan wild ass is distributed in an area of about 0.972*!
     蒙古野驴分布区面积约为14×104 km2 (40°20′~46°40′N、85°40′~107°30′E),海拔高程介于700~1500 m,初步估算数量不超过2000头;
短句来源
     There are almost 300×10~4km~2 carbonate rocks distribution area in China, oil and gas pool from the Proterozoic Era to the Cainozoic Era stratum also.
     我国有近300×10~4km~2的碳酸盐岩分布区,元古代到新生代地层均有碳酸盐岩油气藏,勘探开发潜力巨大。
短句来源
     The composition and quantity of Tabanidae are different in every distribution area. In southern areas of Long Mountain there are 5 genera and a total of 31 species,and among these species,11 species of oriental region,8 species of palaearctic region,12 species are widespread species,the most species are distributed at this area.
     各分布区的虻种组成与数量不一,陇南南部山地虻科5属31种,其中东洋界成分11种,古北界成分8种,广布种成分12种,是甘肃省虻种分布最多的地区;
短句来源
     The distribution area belongs to middle subtropical zone of humid monsoon climate,with an annual average temperature of 11.7~15 ℃ and an annual average rainfall of 1 600~ 2 000 mm on center.
     分布区属中亚热带湿润气候,中心分布区年平均气温11.7~15℃,年降水量16 0 0~2 0 0 0mm。
短句来源
     Advances in study of the distribution area of species
     物种分布区研究进展
短句来源
更多       
  range
     2) The content of total N of dry land soil in 2003 was 1.57±0.14 g/kg,which represented a 18.0% increase compared to that in 1990.Main distribution range was 0.75—1.50 g/kg(58.2%—58.8%)both in 1990 and 2003;
     2)旱土2003年的氮素含量为1.57±0.14 g/kg,比1990年提高18.0%,1990和2003年主要分布区间都为0.75~1.50 g/kg(58.2%~58.8%),但2003年分布在1.502~.
短句来源
     and the δ13O values range between -15. 9‰ and -6. 0‰ and, -7. 6‰ to + 1. 2‰ in the Ordovician.
     奥陶系标准剖面(河北唐山剖面)海相碳酸盐岩的δ~(18)O值分布区间为-15.9‰~-6.0‰,δ~(13)C值为-7.6‰~+1.2‰。
短句来源
     A research of stable isotopic composition of carbonates from both standard sections of the Cambrian located at Zhangxia, Shandong Province and those of the Ordovician at Tangshan, Hebei Province, both in North China, shows that the δ18O values range from -10. 6‰ to -4. 8‰ and the δ13C values, between -5. 8‰ and + 1. 6‰ in the Cambrian;
     渤海湾地区寒武系标准剖面(山东张夏剖面)海相碳酸盐岩氧同位素δ~(18)O值分布区间为-10.6‰~-4.8‰,碳同位素的δ~(13)C值为-5.8‰~+1.6‰;
短句来源
     The 3He/ 4He ratios of cobalt crust are lower than those of nodules, and vary in a wide range, from 6.05×10 -8 to 8.08×10 -5 . In the 3He- 4He figure, most data points of cobalt crust fall into the helium isotope range of MORB and mantle plume.
     结壳的3 He/4 He 比值相对较低,变化范围为6 .05 ×10 - 8 ~8 .08 ×10 - 5 。 在3 He- 4He 图上大部分结壳的He 同位素数据点均位于MORB 和地幔热柱的He 同位素分布区及其附近。
短句来源
     In song section consisting of 302 whistles, the main distributive range of the whistle period and of the mean period of the syllable in each whistle is 115-225ms and 12.90-15.75 ms,respectively.
     在由302个哨声组成的鸣声段中,哨声周期和每个哨声内单音节平均周期的主要分布区分别为115-225ms和12.90-15.75ms.
短句来源
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  areal
     The species of Mongolian areal type are 29% of areal type and those of Mongolian-northern China areal type are 24%.
     分布区型结构以蒙古分布区型的种类最多占29%,蒙古—华北分布区型次之占24%。
短句来源
     in term of areal type, there are 15 endemic species to China,16 tropic type, 21 temperate type, and 3 cosmopolitan, accounting for 27 3%, 29 1%,38 2%,5 4% of total genus, respectively.
     从分布区类型看 ,中国特有属 1 5个 ,热带性属 1 6个 ,温带性属 2 1个 ,世界分布属 3个 ,各占总属数的 2 7 3% ,2 9 1 % ,38 2 % ,5 4 %。
短句来源
     Analysis of areal types shows that 32.8% of the families are of tropical and subtropical type, 23.3% tropical to temperate type, and 18.1% typically tropical type.
     科、属、种的分布区类型分析表明:科的分布区类型以热带和亚热带分布最多(32.8%),其次是热带到温带分布(23.3%)和典型热带分布(18.1%);
短句来源
     Areal types at generic level mostly are tropical (81.4%), in which 28.4% are of Indo-Malaysian type and 26.8% are of pantropic type.
     属的分布区类型以热带亚洲分布最多(28.4%),其次是泛热带分布(26.8%),热带分布多于温带分布(258:55);
短句来源
     There are 13 areal types,among 13 areal types,the genera of 26.25% tropical distribution and 31.25% temperate distribution and 37.50% endemic genera to china in total genera.
     分布区类型13个,其中以热带或以热带分布为主的属占总属数的26.25%,以温带或以温带分布为主的属占31.25%。 中国特有分布最突出,占37.50%。
短句来源
更多       
  distributional range
     (1) Four phases in the history of nature conservation in China are recognized; in the first phase, there was a gradual loss of biotic diversity and reduction in distributional range of many species;
     1.中国自然保护的发展经历了四个阶段:第一阶段的特点是生物多样性逐渐受到影响,很多物种的分布区范围缩小;
短句来源
     Data were obtained for 392 trees from 20 populations covering the total distributional range of the species.
     整个分布区内20居群392个个体的trnT-trnF序列变化进行了研究;
短句来源

 

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      distribution area
    Larix principis-rupprechtii forest is an important vegetation formation and has a large distribution area in Luya Mountain Reserve, China.
          
    This work presents the first integral characteristic of the VirgulinellaBed corresponding to the middle part of the Oligocene-Lower Miocene Maikop Group throughout its entire distribution area in the central part of the Eastern Paratethys.
          
    That is why they are encountered throughout the distribution area of this species, even in subzero temperature areas.
          
    The distribution area of Upper Riphean stromatolitic formations includes the Karatavian stratotype region, where 12 stromatolite beds ranging in age from ≥900 to 620 Ma are established.
          
    Distribution area of the latter was always parallel to marginal structures of the platform, though being of changeable size, particularly of length.
          
    更多          
      range
    Among all image transforms, the classical (Euclidean) Fourier transform has had the widest range of applications in image processing.
          
    The Hausdorff and packing dimensions of the range BH ([0, 1]N), the
          
    As the main application it is shown that, in general, a localization operator possesses the Fredholm property, and thus its range is closed in the target space.
          
    We then use interpolation method to identify these spaces with the classical ones for a certain range of p, q >amp;gt; 1.
          
    However, the Mattila integral, associated with the Falconer distance problem for these measures is unbounded in the range $0 >amp;lt; s >amp;lt; \frac{d^2}{2d-1}$.
          
    更多          
      areal
    The spatial distribution and areal extent for the coniferous forests, shrub-grass, evergreen broad-leaved forests, and agricultural vegetation were calculated and compared with the Vegetation Atlas of China at a 1:1,000,000 scale.
          
    In the present study we solve the problem of the interference of wells in such media for an areal system of well locations.
          
    In this study we obtain the Integro-differential equation for the motion of the interface of two incompressible fluids in various well areal arrangement systems.
          
    Comparative analysis of methods of areal flooding of stratified reservoirs of anomalous oil
          
    A parametric study is made of four known schemes of areal flooding: two-point (straight line), five-, seven-, and nine-point [10].
          
    更多          
      其他


    1. Woolly apple aphis infests the apple and causes considerable injuries to the trees in China.In this paper the writers report on the results of the investigations, carried out in 1953-56, onthe bionomics and the utilization of Aphelinus mali, especially on the ways of increasing itsvitality by means of hybridization. 2. Aphelinus mali overwinters in the full-grown larval stage within hardened body of itshost at Tsingtao, Shantung Province. Low temperature, the absolute low temperature there reach-ed as low...

    1. Woolly apple aphis infests the apple and causes considerable injuries to the trees in China.In this paper the writers report on the results of the investigations, carried out in 1953-56, onthe bionomics and the utilization of Aphelinus mali, especially on the ways of increasing itsvitality by means of hybridization. 2. Aphelinus mali overwinters in the full-grown larval stage within hardened body of itshost at Tsingtao, Shantung Province. Low temperature, the absolute low temperature there reach-ed as low as --12℃. in 1954 caused litlle winter mortality of the parasite in Tsingtao and thepercentage of the emergence of adult was as high as 85% as usual. The pupae appeared in thelate part of March of the next spring as the temperature of the ten-day average reached 6°to7℃. The first adult from overwintering materials emerged in the middle of April as the tem-perature of ten-day average reathed 11℃. The lowest temperature at which the adults emergedfrom the overwintering larvae kept under the various temperatures was about 10°±1℃. whichwas lower than the figure given by other authors, for example 12°-- 13℃. as reported by Borgin Sweden. 3. There are about 10--12 generations annually, 13 generations in maximum and 9 genera-tions in minimum. The duration of life-cycle of the parasite varies from the different periodsand the main influencing factor is the temperature during the development period of the parasites.One of the longest generation is the overwintering generation which lasts 184 days. Whereas theshortest one lasts about 7 days only in the middle part of August. The optimal temperatures forits development are between 22°to 27℃.; the most favorable humidity range is from 80 to90 per cent. Both are higher than that required by the woolly apple aphis for outbreaks, vtz.16.5°to 22℃. and 60 to 70 per cent. 4. Aphelinus mali had been reported by other authors as parasitizing about twenty differentkinds of aphids, but in Tsingtao it parasitizes mainly the woolly apple aphis in field conditionand just a few of them parasitize in the woolly aphis on Populus canadensis. The female adultsseem to prefer to oviposit in those aphids which have a layer of while wax and are sluggish inmovement, and therefore not only with possess black color as mentioned in the literatures. The adults survived longest in the laboratory (up to 41 days) with access to molasses. Thesex ratio was variable, though females were always more numerous than males, the unfertilisedfemales giving rise to males only. 5. The number of egg-laying by single female adult varies with different temperatures. Thereseems to be more egg-laying in the reasonable high temperature, such as in 1954, the numberof egg-laying per female at the different room temperature is as follows: at 16.3℃., 19℃.,23.3℃., 24.2℃. and 26℃. are 10, 17, 32.4, 58.5 and 21.eggs, respectively; and in 1955 at 19℃.,21℃., 24.3℃., 26.2℃. and 28.4℃.,are 22.7, 29, 44.5, 51 and 28 eggs, respectively. However, the relative humidity seems not so significant as the temperature, but under the high tempera-ture and high humidity condition the adult died more quickly and depoisited less eggs thanusual. The different size of the individual also shows its different number of egg-laying and thebigger one always lay more than the smaller. In Tsingtao, an individaul female deposits amaximum of 108 eggs under laboratory conditions. 6. In Tsingtao region, the parasite have difficulty to get full control of the host pestthroughout the whole season. This is thought to be due to three causes: (1). the low repro-ductive capacity of the local parasite, and especially the adverse effect of low temperature in bothspring and autumn restricted the activity of egg-laying of the adult parasite and the developmentof larval parasite. And in contrast to the host, the pest fares very well under these conditions. (2).the parasite emerges too early in the spring before the woolly apple aphis has become abundant.(3). a large part of the adult parasites died because of shortage of host for oviposition in thespr

    1.本研究工作自1953年开始至1956年,1957至1958年作了一些大量繁殖散放工作,均在山东青岛进行。通过室内外的饲养观察,了解苹果绵蚜寄生蜂一年发生代数、生物学特性及其在田间与寄主的消长情况。通过生态条件的分析,找出寄生蜂不能全年抑制绵蚜发生为害的原因所在,然后根据米丘林的生物科学原理,运用远缘的种内杂交方法,提高当地寄生蜂的生活力,向苏联克里米亚地区引进寄生蜂进行杂交试验。证明有效之后乃在田间实际散放。通过1957年的调查,指出确实有效。对今后农业害虫的生物防除利用分布区内的迁移,改善生物群落的方法。提供理论基础。 2,绵蚜寄生蜂在青岛以老熟幼虫在寄主尸体内越冬,翌年3月下旬气温平均达6—7℃时变转为蛹,4月中旬气温平均达9—11℃时成虫羽化。一年发生10—12代。最少9代,最多可达13代。每代发育的时间长短与大气温度有密切的关系。其发育最适宜的温度范围为22—27℃左右,大气相对湿度约在80—90%之间。较绵蚜要求的最适宜温湿度各为16.5—22℃及60—70%略高。这是年中绵蚜发生前期,寄生蜂不能控制它的主要原因之一。此蜂寄生性专一,在青岛田间以寄生苹果绵蚜为主,极少数能在加拿大白杨...

    1.本研究工作自1953年开始至1956年,1957至1958年作了一些大量繁殖散放工作,均在山东青岛进行。通过室内外的饲养观察,了解苹果绵蚜寄生蜂一年发生代数、生物学特性及其在田间与寄主的消长情况。通过生态条件的分析,找出寄生蜂不能全年抑制绵蚜发生为害的原因所在,然后根据米丘林的生物科学原理,运用远缘的种内杂交方法,提高当地寄生蜂的生活力,向苏联克里米亚地区引进寄生蜂进行杂交试验。证明有效之后乃在田间实际散放。通过1957年的调查,指出确实有效。对今后农业害虫的生物防除利用分布区内的迁移,改善生物群落的方法。提供理论基础。 2,绵蚜寄生蜂在青岛以老熟幼虫在寄主尸体内越冬,翌年3月下旬气温平均达6—7℃时变转为蛹,4月中旬气温平均达9—11℃时成虫羽化。一年发生10—12代。最少9代,最多可达13代。每代发育的时间长短与大气温度有密切的关系。其发育最适宜的温度范围为22—27℃左右,大气相对湿度约在80—90%之间。较绵蚜要求的最适宜温湿度各为16.5—22℃及60—70%略高。这是年中绵蚜发生前期,寄生蜂不能控制它的主要原因之一。此蜂寄生性专一,在青岛田间以寄生苹果绵蚜为主,极少数能在加拿大白杨绵蚜上寄生。在人工强迫接种的情况下,能在榆树叶瘤蚜及野艾的绵蚜体上产卵并发育成长为老熟

    The study of Chinese Araliaccae(including those of Taiwan)reveals the occurrence of 19 genera, 162 species, 47 varieties and 11 forms, of which many are new to science. Owing to the similarity in its fruit and embryo to the Mastixia of Cornaceae, the genus Diplopanax is excluded herewith from the Araliaceae.New phylogenetic relationships of the Chinese genera of this family have been proposed by the author, who is of the opinion that in the study of phylogenetic relationships, emphasis should be laid not only...

    The study of Chinese Araliaccae(including those of Taiwan)reveals the occurrence of 19 genera, 162 species, 47 varieties and 11 forms, of which many are new to science. Owing to the similarity in its fruit and embryo to the Mastixia of Cornaceae, the genus Diplopanax is excluded herewith from the Araliaceae.New phylogenetic relationships of the Chinese genera of this family have been proposed by the author, who is of the opinion that in the study of phylogenetic relationships, emphasis should be laid not only on the characters of the reproductive organs, but also on those of the vegetative distinctions of the examined genera as well. There are no direct phylogenetic relationships between the two genera except that all the distinctive characters of one genus are more advanced than, those of the other.The facts that the Chinese genera and species are mainly distributed in the south-western China, especially in the province of Yunnan, where the primitive forms, such as Tupidanthus, Trevesia, etc. occur in luxuriance, leads the author to believe that Yunnan and its neighborhood is possibly the motherland of the Indo-Malay distribution area of the Araliaceae.

    本文分为三个部分:第一部分简略的报导我国五加科植物研究的历史和屬、种数目,目前我国五加科植物共有19(?)、162种、47变种和11变型,这一数目不包括应屬山茱萸科的马蹄参屬(Diplopanax)在内。 第二部分讨论五加科屬间的亲缘关系,提出了我国五加科一个新的屬间亲缘关系的意见,并给出了示意图,作者认为研究植物屬间的亲缘关系,必须根据科学的进化倾向,探讨各方面的性质,包括植物体的性状在内,凡是两个亲缘关系密切的屬,如其一个屬虽具有较另一个屬许多较进化的性状,但只要这—个屬具有一个较另一屬稳定的原始性状,即不能认为这一个屬直接起源于另一个屬,在研究屬间亲缘关系时,如果只注意于自已论点有利的性质,忽视对自已论点不利的性状,就不可能找出正确的系统关系。 第三部分讨论我国五加科植物的水平分布和垂直分布,我国西南、尤其是云南,不但具有本科现存最原始的屬和种,种类也远较其他各地为多,又富有不少特产种,而且从地形和环境条件来说也有其特点,所以著者认为这一地区有可能是本科植物在印度——马来分布区的起源地。

    China is one of the countries with the most numerous species of Dendrolimus in theworld. There are 13 known species. According to the research on the classification anddistribution of Dendrolimus in the country, by the Institute of Zoology, Academia Sinica,during the past years, the results indicate distinctly that their geographic distribution andthe distribution of their host-plant are closely related. Selecting the highest grade flora of China, we draw a line which divides the wholecountry into two main portions:...

    China is one of the countries with the most numerous species of Dendrolimus in theworld. There are 13 known species. According to the research on the classification anddistribution of Dendrolimus in the country, by the Institute of Zoology, Academia Sinica,during the past years, the results indicate distinctly that their geographic distribution andthe distribution of their host-plant are closely related. Selecting the highest grade flora of China, we draw a line which divides the wholecountry into two main portions: the eastern and western divisions. The former, wherethe climate is humid and pine forests are luxuriant, is the main distributional region ofDendrolimus, while the latter, where weather is arid and with plenty of desert stepp-es, generally there are no Dendrolimus. At the same time, it has also been discoveredthat the distribution of Dendrolimus is not only closely related to altitude, but also tolatitude. According to the distribution of their host-plant, Larix olgensis var. koreanaand Pinus massoniana (with the isotherm of an average temperature of January at--12℃ and 0℃), we assume to subdivide the eastern division to 3 regions as north-eastern, northern and southern districts of China. In each of the districts there are dif-ferent distributions of Dendrolimus. Generally in the northeastern district of China, theD. sibiricus Tschetv. is distributed. The northern and the southern districts of China mayagain be subdivided into its own inland and coastal parts. The D. tabulaeformis Tsaiet Liu is distributed in the terrestrial and the D. spectabilis Butler in the coastal partof northern district of China. A great part of southern district of China is distributedwith coastal D. punctatus Walker, and the southwestern inland region is distributed withthe D. latipennis Walker, D. xichangensis Tsai et Liu and D. kikuchii Mats. The divisionbetween inland and coastal parts within the two districts mainly depends upon the dis-tribution of the host-plant of Pinus tabulaeformis Carr. and Pinus massoniana Lamb.

    我国的松毛虫种类已知的有13种,是世界上已记载的松毛虫种类最多的国家。 根据中国科学院动物研究所历年来在国内所收集的松毛虫种类和分布的资料,结合已知主要松树种类的天然分布进行综合分析的结果,显示出松毛虫不同种类的地理分布与其寄主植物的天然分布有着密切的相关。例如西伯利亚松毛虫的分布只限制在东北地区兴安落叶松、黄花松的天然分布范围里,油松毛虫在油松分布区,赤松毛虫在赤松分布区,云南极毛虫在云南极分布区以及马尾松毛虫在马尾松分布区等。 由于这些松树种类彼此间的天然分布界限十分明显而基本上少有重迭,因此试将我国东部地区松毛虫不同种类的地理分布按照其寄主植物划分为以下三个部分、五个松毛虫区: 一、东北部分 北界大兴安岭,南至安东—沈阳线(相当于全国一月份平均-12℃等温线),是西伯利亚松毛虫主要分布区,也是兴安落叶松和黄花松天然分布所在地。故名1)西伯利亚松毛虫区。 二、华北部分 北界西伯利亚松毛虫区,南至淮河流域(相当于全国一月份平均0℃等温线),是油松毛虫和赤松毛虫主要分布区,也是油松和赤松的主要分布所在。因此可分为2区: 2)油松毛虫区 主...

    我国的松毛虫种类已知的有13种,是世界上已记载的松毛虫种类最多的国家。 根据中国科学院动物研究所历年来在国内所收集的松毛虫种类和分布的资料,结合已知主要松树种类的天然分布进行综合分析的结果,显示出松毛虫不同种类的地理分布与其寄主植物的天然分布有着密切的相关。例如西伯利亚松毛虫的分布只限制在东北地区兴安落叶松、黄花松的天然分布范围里,油松毛虫在油松分布区,赤松毛虫在赤松分布区,云南极毛虫在云南极分布区以及马尾松毛虫在马尾松分布区等。 由于这些松树种类彼此间的天然分布界限十分明显而基本上少有重迭,因此试将我国东部地区松毛虫不同种类的地理分布按照其寄主植物划分为以下三个部分、五个松毛虫区: 一、东北部分 北界大兴安岭,南至安东—沈阳线(相当于全国一月份平均-12℃等温线),是西伯利亚松毛虫主要分布区,也是兴安落叶松和黄花松天然分布所在地。故名1)西伯利亚松毛虫区。 二、华北部分 北界西伯利亚松毛虫区,南至淮河流域(相当于全国一月份平均0℃等温线),是油松毛虫和赤松毛虫主要分布区,也是油松和赤松的主要分布所在。因此可分为2区: 2)油松毛虫区 主要位置在冀热山地和黄土高原东部,是油松毛虫分布区,是油松分布所在地。 3)赤松毛虫区 主要位置在山东半岛、辽东半岛?

     
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