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distribution     
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  分布
    The Dynamic Distribution and Gene Immunization of Streptococcus suis Type 2 in Guinea Pig Model
    猪链球菌2型在模型动物豚鼠体内的动态分布及基因免疫
短句来源
    Distribution and Function of Kinesin-13A and Ankyrin-like Protein AtANK1 in Plant Cells
    动蛋白Kinesin-13A和类锚蛋白AtANK1在植物细胞中的分布及功能
短句来源
    Temporal and Spatial Distribution of NDRG2 Expression in Human and Mouse Tissues and Preliminary Study on Its Function
    NDRG2在人和鼠组织中表达的时—空分布及其功能的初步研究
短句来源
    Studies on the Spatial Distribution,Accumulation Characteristics of Heavy Metals and Assessments on the Ecological Economic Values of Bullacta Exarata in Tne Intertidal Wetlands
    滩涂湿地泥螺(Bullacta exarata)的空间分布、重金属积累特征及其生态经济价值评估
短句来源
    Molecular Cloning, Expression and Tissue Distribution of Insulin-like Growth Factor Ⅰ in Endangered Animals
    大熊猫等濒危动物IGF-Ⅰ基因的克隆、表达与组织分布研究
短句来源
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  分布规律
    THE DISTRIBUTION LAW AND THE PATTERN FEATURES OF THE BURIED PEAT IN THE SOUTHERN AREA OF JIANGXI PROVINCE
    赣南埋藏泥炭的分布规律及类型特征
短句来源
    THE NORMAL DISTRIBUTION OF THE SPEED OF ATMOSPHERIC MOLECULAR MOVEMENT AS AN ECOLOGICAL FACTOR IN CHINA
    中国大气分子生态因子运动速度的分布规律
短句来源
    The Observation and Study of the Law of the Pollen Distribution in the Air Over Chang-Chun City
    长春市空气中花粉分布规律的观测与研究
短句来源
    THE HORIZONTAL ZONATION DISTRIBUTION OF VEGETATION IN HENAN
    河南植被水平地带性的分布规律
短句来源
    COMMUNITY CHARACTERISTICS AND DISTRIBUTION LAWS OF ACHNATHERUM STEPPE IN QINGHAI PROVINCE
    青海省芨芨草草原的群落特征及其分布规律
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更多       
  分布特征
    Plasma HDL Subclasses and Their Distribution Characteristics
    血浆高密度脂蛋白亚类及其分布特征
短句来源
    THE DISTRIBUTION CHARACTERISTICS OF MERCURY IN SOME NORTH SLOPE SOILS OF THE MIDDLE TIAN SHAN MOUNTAIN
    中天山北坡一些土壤中汞的分布特征
短句来源
    Distribution of Agroclimatic Resources and Agricultural Production in the Hilly Land of Zhejiang Province
    浙江山地农业气候资源分布特征与农业生产
短句来源
    DISTRIBUTION CHARACTERISTICS OF FOGGY DAYS IN WUHAN AND ITS CAUSE
    武汉市雾日分布特征及其原因
短句来源
    THE MORPHOLOGY AND DISTRIBUTION OF DYN A 1-13 NEURON IN THE RAT HYPOTHALAMUS
    下丘脑强啡肽A1-13神经元及纤维的分布特征:免疫细胞化学观察
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  地理分布
    THE GEOGRAPHICAL DISTRIBUTION OF THE TWO SPECIES OF BEDBUGS,CIMEX LECTULARIUS L.AND C.HEMIPTERA F.,IN CHINA
    温带及热带臭虫Cimex lectularius L.,Cimex hemiptera F.在中国的地理分布
短句来源
    ON THE GEOGRAPHICAL DISTRIBUTION OF THE FRESHWATER CLADOCERA IN CHINA
    中国淡水枝角类的地理分布
短句来源
    A GENERAL SURVEY OF THE GEOGRAPHICAL DISTRIBUTION OF DENDROLIMUS GERMAR IN THE EASTERN PORTION OF CHINA
    松毛虫属(Dendrolimus Germar)在中国东部的地理分布概述
短句来源
    THE GEOGRAPHICAL DISTRIBUTION AND FAUNAL CHARACTERISTICS OF TETRAODONTIFORM FISHES OF CHINA
    中国鲀形目鱼类的地理分布和区系特征
短句来源
    ON THE ORIGIN AND GEOGRAPHIC DISTRIBUTION OF GENUS RHODODENDRON L.
    杜鹃属(Rhododendron L.)的地理分布及其起源问题的探讨
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  distribution
The Diagonal Distribution for the Invariant Measure of a Unitary Type Symmetric Space
      
In this paper we compute the Fourier transform of the diagonal distribution for $\phi_{*}\mu,$ relative to a compatible triangular decomposition of G, the complexification of U.
      
Scales of quasi-norms are defined for the coefficients of the expansion that characterize, via Littlewood-Paley-Stein theory, when a radial distribution belongs to a Triebel-Lizorkin or Besov space.
      
Approximation of Distribution Spaces by Means of Kernel Operators
      
In this note we prove that the Wigner distribution of an f ∈ L2(?n) cannot be supported by a set of finite measure in ?2n unless f=0.
      
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1. This paper deals with the blood-sucking Ceratopogonidae collected fromSzechuan province.2. The female flies. of Lasiohelea taiwana, Culicoides sugimotonis and Culi-coides oxystoma have been studied morphologically in detail. Apart fromTaiwan Province, these species are recorded for the first time in China.3. The proportional length of the antennal segments, the shape of sonsorypore of the maxillary palpus and the distribution of wing spots are thespecific characters for the identification of these species.4....

1. This paper deals with the blood-sucking Ceratopogonidae collected fromSzechuan province.2. The female flies. of Lasiohelea taiwana, Culicoides sugimotonis and Culi-coides oxystoma have been studied morphologically in detail. Apart fromTaiwan Province, these species are recorded for the first time in China.3. The proportional length of the antennal segments, the shape of sonsorypore of the maxillary palpus and the distribution of wing spots are thespecific characters for the identification of these species.4. The blood-sucking habits of these species are quite different Lasioheleataiwana prefers human blood, Culicoides sugimotonis is a domestic fowlfeeder and sometimes also may feed on human blood while Culicoidesoxystoma is a preference for animal blood.

(一)本文所叙述三种蠛蠓,亦称墨蚊,采集地区包括四川省重庆之歌乐山、北碚之缙云山、澄江镇、宜宝及嘉定等地。 (三)三种蠛蠓之学名为Lasiohelea taiwana,Culicoides sugimotonis及Culicoides oxystoma,除台湾已有报告外,国内其他各地尚系首次记录。 (三)本文所记载的蠛蠓均系雌性成虫,其雄虫,蛹及幼虫之生态以及与传播疾病之可能性诸问题,尚有继续研究之必要。 (四)触角、触须、腿肢各节之比长,翅斑之分布及感觉毛开口孔之形状等为蠛蠓分类上之主要特征。 (五)三种蠛蠓之嗜血习性各不同:Lasiohelea taiwana之吸血对象为人类;Culicoides sugimotonis吸血对象为家禽有时亦吸人血;Culicoides oxystoma之吸血对象则为家畜。

1. In order to study the distribution of the two species of bedbugs,Cimex lectularius and C. hemiptera, 81 representative localities of 23provinces and Inner Mongolia were selected for the collection ofbedbugs.2. Among the 81 localities, 55 had only C. lectularius, 11 had onlyC. hemiptera, while the remaining 15 localities had both species.3. Atmospheric temperature forms one of the most important factorslimiting the distribution of bedbugs. Consequently C. hemipteralimits itself in the North at...

1. In order to study the distribution of the two species of bedbugs,Cimex lectularius and C. hemiptera, 81 representative localities of 23provinces and Inner Mongolia were selected for the collection ofbedbugs.2. Among the 81 localities, 55 had only C. lectularius, 11 had onlyC. hemiptera, while the remaining 15 localities had both species.3. Atmospheric temperature forms one of the most important factorslimiting the distribution of bedbugs. Consequently C. hemipteralimits itself in the North at Chian-Yang of Fukien, Lo-Chang ofKuangtung, Heng-Yang of Hunan, Tsun-I of Kweichow, Ch'eng-Tuof Szechuan and Ya-An of Sik'ang. In these localities the wintertemperature is usually at 4°- 8℃. North of this belt, because thewinter temperature is much lower, the condition is not suitable forthe existence of this species. Cimex lectularius is more resistant tocold. It is, however, less resistant to extreme heat. In localities inSouth China where the summer temperature runs over 30℃, thecondition is not suitable for the survival of this species. Its southernlimit of distribution has been found to be a line connecting Amoy,Chu-Kiang of Kuangtung, Kwei-Lin of Kuangsi, P'ing-T'ang of Kwei-chow and Meng-Tze of Yunnan.4. The relationship of latitude, altitude, atmospheric pressure andhumidity to the biology of bedbugs were briefly discussed.

(一)作者在1950—1951年,曾收集中国81个地区的臭虫标本,作一系统的调查研究,这81个地区包括23省和内蒙古自治区。 (二)在81个地区所采集到的标本,有55个地区只有温带臭虫,44个地区只有热带臭虫,其余15个地区两种臭虫均有发生。 (三)气温是影响臭虫分布的重要因素之一。热带臭虫的分布,北至福建的建阳,广东的乐昌,湖南的衡阳,贵州的遵义,四川的成都(李、孟1951),西康的雅安,这些地区的冬季气温大都在4°—8℃。在这些北分布地区以北的地区,冬季气温较低,大多不适于它的生长,温带臭虫的抗寒力较强,在华北、东北、西北均有发生,它的分布南至福建的厦门,广东的曲江、广西的桂林、贵州的平塘(李、孟1951)、云南的蒙自,这些地区夏季气温均在30℃以下,仍可适于它的生长。 (四)地理上的经度与臭虫的分布并无关系,但纬度与臭虫的分布有关,热带臭虫的分布北至北纬30°41″(成都),它的发生地带以热带为主,在亚热带亦可生长,温带臭虫的分布南至北纬23°25′(蒙自),它的发生地带以亚热带及温带为主但传入部分的热带地区,亦可生长。 (五)地势过高可以影响热带臭虫的发生,在昆明、大理、昭通、丽江等地,拔海高度均在1...

(一)作者在1950—1951年,曾收集中国81个地区的臭虫标本,作一系统的调查研究,这81个地区包括23省和内蒙古自治区。 (二)在81个地区所采集到的标本,有55个地区只有温带臭虫,44个地区只有热带臭虫,其余15个地区两种臭虫均有发生。 (三)气温是影响臭虫分布的重要因素之一。热带臭虫的分布,北至福建的建阳,广东的乐昌,湖南的衡阳,贵州的遵义,四川的成都(李、孟1951),西康的雅安,这些地区的冬季气温大都在4°—8℃。在这些北分布地区以北的地区,冬季气温较低,大多不适于它的生长,温带臭虫的抗寒力较强,在华北、东北、西北均有发生,它的分布南至福建的厦门,广东的曲江、广西的桂林、贵州的平塘(李、孟1951)、云南的蒙自,这些地区夏季气温均在30℃以下,仍可适于它的生长。 (四)地理上的经度与臭虫的分布并无关系,但纬度与臭虫的分布有关,热带臭虫的分布北至北纬30°41″(成都),它的发生地带以热带为主,在亚热带亦可生长,温带臭虫的分布南至北纬23°25′(蒙自),它的发生地带以亚热带及温带为主但传入部分的热带地区,亦可生长。 (五)地势过高可以影响热带臭虫的发生,在昆明、大理、昭通、丽江等地,拔海高度均在1922米以上,热带臭虫并无发生,但对温带臭虫并不影响。 (六)气压与地势的高低有关,昆明、大理,昭通、丽

In connection with experiments on the control of the rice stem borer, aseries of observations were conducted in 1949 to 1952 in Canton to determinethe form of the distribution of the moth, the egg-mass and the larval popula-tions of this species. It was found that the moth and egg-mass populations inrice seed-beds are in essential agreement with the random distribution of thePoisson series. The larval population in spring-crop fields apparently conformsto the contagious and the negative binomial...

In connection with experiments on the control of the rice stem borer, aseries of observations were conducted in 1949 to 1952 in Canton to determinethe form of the distribution of the moth, the egg-mass and the larval popula-tions of this species. It was found that the moth and egg-mass populations inrice seed-beds are in essential agreement with the random distribution of thePoisson series. The larval population in spring-crop fields apparently conformsto the contagious and the negative binomial distributions. The larval population during hibernation period appears to be neither of the random distribution norof the contagious type but agrees with the negative binomial distribution. The population distribution of the injured stems, characterized by the ap-pearance of "dead-hearts" and "white ears" was also studied. The "dead-hearts"popolation in autumn-crop fields conforms with the contagious and the negativebinomial distribution. The distribution of the "white ears" is not at random. It iseither in essential agreement with the contagious or with the negative binomialdistribution, depending on the size of the sampling unit. Based on the form of population distribution the questions of sampling tech-nique, the design of field experiments, the transformation of data for statisticalanalysis, as well as the habits and control of insects have been discussed inrelation to the rice stem borer. Since the populations of larvae and "whiteears" differ significantly from the random distribution, a new technique forsampling has been proposed. It is hoped that this may be useful in the investi-gations on the relative effectiveness of control operations and for census purposes.

(一)本文就昆虫常见的数种集团分布:潘松分布、核心分布和负二项式分布的公式、性质和例子等略加讨论介绍。 (二)我们在广州附近对三化螟各时期和白穗、枯心苗的田间分布型式作了初步的调查,所得结果如下: 1.螟蛾和卵块在秧田上是随机分布的。 2.幼虫在本田分布不随机,符合核心分布和负二项式分布。 3.白穗在田间的分布不随机,1×1丛、2×2丛、……6×6丛各种取样单位型样本均符合负二项式分布,4×4丛、5×5丛和6×6丛三种取样单位型样本则更符合核心分布。 4.稻遗株内越冬幼虫分布不随机,亦不符合核心分布,但符合负二项式分布。 5.晚造本田枯心苗田间分布不随机,符合核心分布和负二项式分布。 (三)本文就昆虫集团分布型式的调查在实用上的意义,联系到三化螟来讨论,我们论及与虫害调查取样技术、田间试验设计、统计代换方法、昆虫生活习性和害虫防治等各方面的关系;其中取样技术方面,我们举出针对三化螟幼虫在本田和白穗不随机分布的取样新方法的尝试,希望对今后螟害调查工作有所帮助。 (四)最后,我们就一些昆虫分布的特殊问题加以论列,像密度对分布型式的影响,混合集团和环境因素的影响于昆虫集团分布类型等,就中说明了密度过大过 小时了解分...

(一)本文就昆虫常见的数种集团分布:潘松分布、核心分布和负二项式分布的公式、性质和例子等略加讨论介绍。 (二)我们在广州附近对三化螟各时期和白穗、枯心苗的田间分布型式作了初步的调查,所得结果如下: 1.螟蛾和卵块在秧田上是随机分布的。 2.幼虫在本田分布不随机,符合核心分布和负二项式分布。 3.白穗在田间的分布不随机,1×1丛、2×2丛、……6×6丛各种取样单位型样本均符合负二项式分布,4×4丛、5×5丛和6×6丛三种取样单位型样本则更符合核心分布。 4.稻遗株内越冬幼虫分布不随机,亦不符合核心分布,但符合负二项式分布。 5.晚造本田枯心苗田间分布不随机,符合核心分布和负二项式分布。 (三)本文就昆虫集团分布型式的调查在实用上的意义,联系到三化螟来讨论,我们论及与虫害调查取样技术、田间试验设计、统计代换方法、昆虫生活习性和害虫防治等各方面的关系;其中取样技术方面,我们举出针对三化螟幼虫在本田和白穗不随机分布的取样新方法的尝试,希望对今后螟害调查工作有所帮助。 (四)最后,我们就一些昆虫分布的特殊问题加以论列,像密度对分布型式的影响,混合集团和环境因素的影响于昆虫集团分布类型等,就中说明了密度过大过 小时了解分布型式成为不必要的,因为极度的不均衡会回复为均衡状态的。

 
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