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morphological variations
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  形态变异
     Morphological Variations of the Zacco platypus (Temminck et Schlegel)
     宽鳍(?)Zacco platypus(Temminck et Schlegel)的形态变异
短句来源
     Study on the morphological variations of Cephalotaxus mannii in different populations
     不同种群中海南粗榧(Cephalotaxus mannii)形态变异研究
短句来源
     Morphological variations of cardiac conduction system observed in 886 cases
     886例人心传导系统形态变异研究
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     Phylogenetic analysis of the Brn1 gene sequence of Exserohilum rostratum with great morphological variations was conducted.
     对形态变异特征较大的嘴突脐孢种Brn1基因核苷酸序列系统发育进行了分析。
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     (2) The Caragana species were adaptable to their environment by means of morphological variations, water adjustment, lower transpiration, higher water use efficiency, and variations in carbon assimilation characteristics, photosynthetic apparatus and protective enzyme system.
     (2)锦鸡儿属植物是以形态变异、完善的水分调节功能、低蒸腾和高水分利用效率、光合特性、光合机构和抗氧化系统的变异来适应它们的环境的。
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  形态差异
     The results are as follows :the number of chromosomes is 2 n = 50,morphological variations is not obvious to the 25 pairs of chromosomes,with all of them are median and submedian centromeric chromosomes,relative length ratio between the longest chromosome and the shortest one is 1.72,there is no SAT in 50 chromosomes,the karyotype formula is 2 n = 50 = 38 m +12 sm + 6 Bs,the karyotype type is 2 A.
     结果如下:该入侵种的染色体数为2n=50,各染色体间形态差异不明显,均为中着丝粒或近中着丝粒染色体,最长与最短染色体相对长度比为1.72,全套染色体未见随体,核型公式为2 n=50=38 m+12 sm+6 B s,核型类型为较对称的2A型。
短句来源
     Morphological variations and discriminant analysis of different geographical populations of Tegillarca granosa
     不同地理种群泥蚶的形态差异与判别分析
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     Morphological Variations and Discriminant Analysis of Different Populations of Meretrix meretrix in Four Sea Regions in China
     我国四海区不同群体文蛤形态差异与判别分析
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     Data on 32 morphometric and seven meristic characters of 224 specimens from four currently recognized Sinibrama species in southern China were collected by using multivariate morphometrics and traditional taxonomy methods,and then analyzed with the principal component analysis for investigating morphological variations among them and evaluate their species validities.
     为探讨华鳊属鱼类种间和种内居群间的形态差异及其物种有效性 ,采用多变量形态度量 ,结合传统分类方法 ,获得该属鱼类不同地理居群共 2 2 4尾标本的 32个测量性状和 7个可数性状数据 ,并做主成分分析。
短句来源
     Morphological variations analysis of five wild population of Cyclina sinensis
     我国5个青蛤地理群体形态差异分析
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  形态变化
     Acorrelation analysis of the morphology of nine solar flares of a large solar active region in August 1972 and the morphology of the fine structure of sunspot group in this region has led to the following conclusions: 1.There is a certain correlation between the outburst of the first large flare, occurring at 0355 UT. of August 2nd and the morphological variations of photos- pheric spots both in time and in spatial positions.
     通过对1972年8月太阳大活动区九个耀斑(包括它全部2级以上大耀斑)的形态和黑子精细结构形态的相关分析,导致以下结论:1.8月2日0355UT本活动区第一次大耀斑的爆发与光球黑子形态变化在时间上和空间位置上有一定的相关性。
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     The mathematical model of the critical phenomenons of the martensitic morphological variations for three common kinds of martensite, (111)r, (225)r and "cryptocrystallin" martensites in steels, is advanced.
     本文提出了淬火钢中常见的(111)r,(225)r及“隐晶”等三种马氏体形态变化的临界现象的数学模式.
短句来源
     Many conclusions got from medical studies and clinical practice depend greatly upon the studies of tissue morphological variations.
     医学科研和临床中的很多结论,与组织的形态变化有关。
短句来源
     The article has a discussion on reusing MFe as design target and, Indicating the relations between various geological process and morphological variations of the orebody and, putting forward focal point of prospecting and exploration in future.
     论述改用MFe作为技术指标图定矿体后各种地质作用与矿体形态变化的关系,提出今后找矿与勘探工作的重点。
短句来源
     Morphological variations of the nucleus in starchy endosperm cell were observed by electron-transmisson microscope during endosperm development in rice.
     应用透射电子显微镜观察水稻淀粉胚乳细胞核在发育期间的形态变化
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  “morphological variations”译为未确定词的双语例句
     In order to investigate morphological variations of Elymus sibiricus L. , E.
     为了进一步研究Elymus sibiricus L.、E.
短句来源
     Morphological variations of nutrient organs in which coefficient of average variations was 0.150 were higher than those in reproductive organs with 0.057 of average variation coefficient.
     营养器官形态性状变异(平均变异系数0.150)远大于生殖器官形态性状变异(平均变异系数0.057)。
短句来源
     Morphological variations of apoptosis were observed at 48 hours treated with octreotide by HE staining and apoptosis body was observed under electron microscope.
     奥曲肽可诱导SGC-7901细胞凋亡,HE 染色见奥曲肽作用48 h,细胞开始出现凋亡的形态学改变,72 h凋亡细胞明显增多,电镜下见有典型的凋亡小体出现.
短句来源
     Results indicated extensive intraspecific morphological variations existed between populations from different regions.
     结果发现不同水系间和同一水系不同地区的青虾的形态特征、体型模式等都存在显著差异,青虾形态存在广泛的多态性。
     Fifty female spiders of Cyclocosmia latusicosta Zhu, Zhang & Zhang, 2006 were collected from a small mountain in Guangxi, China and their morphological variations were studied.
     通过研究同一种群雌性宽肋盘腹蛛Cyclocosmia latusicosta Zhu,Zhang&Zhang,2006,发现该种个体间在体长、步足长度、齿堤齿的形态与数量、圆盘肋数及纳精囊长宽之比等方面变异较大;
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  morphological variations
Finally, the role of epitaxy between various morphological variations of TiSi2 is examined because of the important place of this silicide in metal oxide semiconductor field effect transistor technology.
      
Scanning electron microscopy (SEM) was carried out to assess the morphological variations in the different regions of the weldment.
      
Infrared spectroscopy and X ray diffraction study on the morphological variations of carbonate and phosphate compounds in giant
      
Phase structure and morphological variations induced by straining in injection-moulded samples of PA6/EVA blends: influence of m
      
Scanning transmission electron micrographs indicate significant morphological variations (i.e., twinning, branching, kinks, surface roughness, etc.) occur in all of the whisker types.
      
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Root development of the intact or excised embryos of Pinus koraiensis Sieb. et Zucc., exhibited discrepant morphological differentiation under experimental condition. That development of the root enclosed in intact megagametophyte grown in the sterile culture medium without sugar, although it showed more rapid elongation, essentially resembled that of the soil-grown seedlings. However, morphological variations existed in the root growth of the excised embryo after one week's culture. It manifested particularly...

Root development of the intact or excised embryos of Pinus koraiensis Sieb. et Zucc., exhibited discrepant morphological differentiation under experimental condition. That development of the root enclosed in intact megagametophyte grown in the sterile culture medium without sugar, although it showed more rapid elongation, essentially resembled that of the soil-grown seedlings. However, morphological variations existed in the root growth of the excised embryo after one week's culture. It manifested particularly in the development of the coleorhiza-like structure. As the root elongated, it first appeared as a reddish mass covering the root cap. Gradually this tissue mass became loosened and separated from the root cap. Finally it was torn and pushed aside by the elongated root. In the further growth of excised embryos, seven to eight layers of loose tissue which arose from the subepidermal cells were developed around the root tip. Later, the surface layer assumed the appearance of rhizoids and was subsequently shed. During further extention of the first root, zonation of the root apex became inconspicuous. The meristem became reduced in extent; only a layer of initial cells existed between the root cap and the hypocotyl. Meanwhile the root cap became reduced to only a few cell layers, some of which eventually degenerated. After six weeks in culture, the meristematic tissues of some of the root apexes eventually became parenchymatous and maturation of short tracheids extended up to 100--200μ from the apex. Ultimately root ceased to elongate and became senile.

离体的与带有雌配子体的紅松(Pinus koraiensis Sieb.et Zucc.)胚胎,在人工培养下,其根部的生长可表現出各种形态解剖上的分化。普通带有雌配子体的成熟胚的下胚軸基部,除了生长特別迅速以外,其余都比較正常,內部的分化大致也与一般自然生长下的松属幼苗相似。但是完全离体的胚胎,在人工培养一星期后,即可显出各种变异,其中胚根鞘的結构表現得特別显著。这种在胚根伸展时多形成紅褐色的一团,复盖在最前端;里面逐漸与根冠分离,外部变为相当疏松。不久在初生根伸长时即被穿破或推向一边。而初生根的前端周围則又由皮层細胞逐漸轉变成7—8层細胞寬的疏松結构层;在其外面不断的成条状剝落。离体胚初生根继續向前伸长时,根端內的分区逐漸变为不明显;分生組織減少,原始细胞成单层細胞,位在下胚軸的基部。同时根端的根冠細胞退化,只剩了几层細胞;有的不久完全消失。培养六星期后,有些根端的分生組織,逐渐轉变为薄壁组織;分散的管胞十分靠近根的前端。最后根端的组织分化衰退而趋向死亡。

A comparison of the internal structure of the culm and the morphological variations of the fibers in various parts of the culm between Phragmites communis Trin. and Miscanthus sinensis Anders. has been investigated. The short cells which consisted of the silica cells and suberized cells were found to be less in number and much fewer in the form of groups in the epidermis of the culm of Phragmites than in that of Miscanthus. However, the variation in distribution of all these short cells in different...

A comparison of the internal structure of the culm and the morphological variations of the fibers in various parts of the culm between Phragmites communis Trin. and Miscanthus sinensis Anders. has been investigated. The short cells which consisted of the silica cells and suberized cells were found to be less in number and much fewer in the form of groups in the epidermis of the culm of Phragmites than in that of Miscanthus. However, the variation in distribution of all these short cells in different levels of a culm, i. e. more in the upper, and fewer in the lower, obtained in both genera. In the transverse section, only one layer of hypodermal fibers with markedly thickened walls was seen in Phragmites and interior to this, the bundle caps were coalesced into a band; whereas in Miscanthus there were two layers and the bundle caps were more or less discrete. Furthermore, the fundamental parenchyma of the culm occupied a smaller portion in Phragmites than in Miscanthus. The morphological characteristics of fibers in different parts of the culm were similar in both genera, being the longest in the middle portion of the culm and the shorter its base and shortest at the top. The average length, width, and length-width ratio were usually greater in Miscanthus than in Phragmites.

四、摘要本文比較观察了芦葦和芒茎稈的內部結构,及其纤維在上、中、下各部位上的形态变异。由茎稈的結构方面。在芦葦的茎稈表皮上,短細胞較少,并且只有极少数組成为短細胞羣。但是在芒的表皮上,短細胞分布較密,并多連成短細胞羣。其分布密度均以上部最大,中部次之,下部最小。在横切面上,表皮下面的纤維层,在芦葦中只有一层,其細胞壁有显著的加厚;其內的維管束帽連成带状。芒的表皮下則有二层纤維;維管束帽不成带状。另外,芦葦茎稈中的基本薄壁組織所占的比例比芒的小。至于纤維形态方面,芦葦和芒基本相似,并且在长度变化上,都以中部最长,下部次之和上部最短。但是在长度,寬度以及长寬比值上,一般芒比芦葦的大。

For cooperation to the utilization of heterosis and the selection of“three lines”in crops by the people,we have studied tbe metabolic condition of“three lines”inSorghum and rice with irradiant isotops.Experiments indicate that:in the flowerorgan of male sterile plants during the cells inside the anther developing to thestage of microspore or of single nucleic pollen,metabolic blocks rhythmicallydevclopes.This kind of metabolic blocks is mainly relative to the metabolism ofnucleic acid and proten in the cells.At...

For cooperation to the utilization of heterosis and the selection of“three lines”in crops by the people,we have studied tbe metabolic condition of“three lines”inSorghum and rice with irradiant isotops.Experiments indicate that:in the flowerorgan of male sterile plants during the cells inside the anther developing to thestage of microspore or of single nucleic pollen,metabolic blocks rhythmicallydevclopes.This kind of metabolic blocks is mainly relative to the metabolism ofnucleic acid and proten in the cells.At that time the tapetums cell also developedphysiological and morphological variation.this paper may be helpful to advancedlyrecognize the partial internal mechanism produced the abortion of pollen controlingby the hereditary gene of male sterile in the cell.

配合群众性杂种优势利用及“三系”选育科学实验,应用放射性同位素对高粱及水稻“三系”植株的代谢情况进行了研究。实验表明:在不育系植株当花药内的细胞处于小孢子或单核花粉阶段的花部器官中,有规律地发生了代谢障碍,这种代谢障碍主要与细胞中核酸和旦白质的代谢有关;此时,毡绒层细胞也发生了生理、形态上的变化。本文有助于进一步认识细胞内雄性不育遗传因子控制花粉败育性状形成的部份的内在机理。

 
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