纲
- 与 纲 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Totally 338 species of mulberry pests were found in China until now, belonging to 11orders and 71 families (including four families of Arachnida and two families of Mollusca), and containing a new species and two now synonyms.
据作者调查研究,目前我国桑树害虫已知有338种,隶属于11个目71个科(包括蛛形纲蜱螨目4个科和软体动物腹足纲2个科),其中含有1个新种,并厘定2个新同物异名。
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Comprising seed plants that produce an embryo with paired cotyledons and net-veined leaves; divided into six subclasses: Magnoliidae and Hamamelidae; Caryophyllidae (an early and distinctive offshoot); and three more or less advanced groups: Dilleniidae; Rosidae; Asteridae.
由生长双子叶胚胎和网状叶脉叶子的种子植物组成;分为六个亚纲;木兰群和金缕梅亚纲等。
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The mathematical physics essentiality of phenomenological similitude is pointed out to have the same dimension less models, including the same model structures and the same values of all characteristic numbers in a dimension less normalized coordinate basis.
指出了现象相似的数学物理本质是它们在同一个量纲为1的单元坐标体系中有相同的量纲为1的模型:模型的结构相同且各特征数数值——对应相等。
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This paper summarizes research status and progress on classification and ecology of pelagic tunicates in China and abroad, and introduces in detail the basis of classification, current status and trends in Appendicularia and Thaliacea research.
综述了国内外浮游被囊动物分类和生态研究的现状和进展,综述介绍了有尾纲和海樽纲的分类依据、研究现状、趋势和在海洋生态系统中的作用。
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For organizing vegetation submodel, started with the bottom-up gateway to agglomerate plot-data. The vegetation types must be confirmed before predictive vegetation mapping, therefore designed a transforming program to combine 585 plot-data from different surveys for the purpose. But the result of the classification and ordination of the combined plot-data couldn't display comprehensive vegetation types of Taiwan, because the plots were insufficient and disproportionate. Consequently, this study adopted the top-down gateway to divisive vegetation. After referring to Taiwan and east-Asia vegetation research papers and American national vegetation classification system etc., the physiognomic classification scheme of Taiwan had been drafted as vegetation submodel. The scheme included 4 levels: 2 classes, 5subclasses (subarctic, coldtemperate, cooltemperate, warmtemperate, subtropical), 8 groups (based on phenology and types of predominant leaf) and 16 formations (based on moisture regime and predominant taxa). And, the scheme dealt completely with the diverse nomenclatures of vegetation types in the past.
为建立植群亚模型,首先依「整合大量样区资料,由下而上的低阶植相聚类」之途径,设计建档程序及转档程式,成功整并不同来源之585个样区资料,但因样区数目不足且分布不均,分析结果未能显示出台湾完整的植群类型;故转循「预先设定植群类型,由上而下的高阶形相分类」之途径,经参考他国植群分类系统及台湾、东亚植群分类研究报告,订定分类原则及架构,提出4阶层之潜在植群形相分类方案:(1)寒原、森林2类群系纲;(2)亚寒带、冷温带、凉温带、暖温带、亚热带5类群系亚纲;(3) 8类群系组表徵优势植群之叶片的物候与形态;(4) 16类群系说明其水分境制及优势分类群;此方案统一处理了过去各种有关植群划分之纷岐名制,方案之各阶植群类型亦即本研究之植群亚模型。
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Finally, PNV had been mapped according to Boolean discrete methods to connect climate submodel and vegetation submodel by GIS. PNV map first represented the spatial distribution of all vegetation types of 4 physiognomic levels in Taiwan, also integrated the diverse comments of altitudinal vegetation zones and geographical climatic regions in the past. Besides, the scattered ranges of 36 dominant trees in the moisture-thermal regime and climatic zone had been drawn via coordinating 585 plot-data with MWI and WDI.
为达绘制潜在植群图之最终目标,本研究以MWI及WDI之网格图层代表气候亚模型,以潜在植群形相分类方案之各阶类型代表植群亚模型,藉由布林分离法联系此2亚模型之关系,建构气候–植群分类模型,并以地理资讯系统绘制出包含群系纲、群系亚纲、群系组、群系之潜在植群图,首次完整呈现台湾各阶植群类型之空间分布,合理说明了山地植群带分化、北部植群下降及西南部冬季乾旱等现象,亦整合过去各种有关垂直性山地植群带状分化与水平性地理气候区划分的复杂意见;另外,本研究将585个样区林木座标标定於MWI及WDI,绘制36种林木於水热境制及热量气候带之分布范围。
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With the similarity theory and dimensionless analysis method, the relation and corresponding dimensionless relation of the distance between the point of primary breakup and the axis are given.
在此基础上,利用相似性理论和无量纲分析,获得了运动状态下液体轴对称抛撒首次破碎点与对称轴之间的距离与相关参数的无量纲关系式。
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Furthermore, various kinds of approximate matching errors (insertion, deletion, substitution, transposition) can be detected with different structures of rule combination unit. A probability model of packet matched is also proposed for large alphabet environment, which proves that the hardware scheme is practicable.
该并行模型有如下特点:①通过采用不同的规则组合器可完成插入、删除、替代和交换错误的近似匹配;②通过配置参数,可灵活控制近似匹配的程度;③可直接应用於大字符集语言下的纲络内容流分类;④针对中文环境做了概率建模,分析了并行硬件模型对纲络分组的匹配概率,证明该模型在一般情况下具有较好的可应用性。
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This axiom simply says that there would exists an physical existence for any physical dimension , whose modulus is equal to reciprocal of value of this physical dimension.
这个公理简述为:对于任意物理量纲在客观中总存在一个物理实在,其模值等于这个物理量纲数值的倒数。
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Hill mourning the special and advantageous natural conditions, Ailaoshan become enormous natural biological species of germplasm resources gene pool, Yunnan as animals and plantskingdom of natural museumand specimen garden,is a variety of integrated science experiments, is the ideal many disciplines scientific investigation and research base, is the scientific expedition, adventure, photography, research and returned to the natural forest of choice for this paper, through the Ailaoshan Reptilia from the investigation, Ailaoshan the right Reptilia is a more systematic and well described.
哀劳山特殊而优越的自然条件,使哀牢山成为巨大的天然生物种的种质资源的基因库,成为云南动、植物王国中的天然博物馆和标本园,是多种自然科学的综合实验地,是众多学科的理想的科学考察和研究基地,是开展科考、探险、摄影、科研、回归自然、森林的首选之地,本文通过对哀牢山爬行纲的抽取调查,对哀牢山的爬行纲给出一个较系统的,完善的叙述。
- 推荐网络例句
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Do you know, i need you to come back
你知道吗,我需要你回来
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Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.
1〕 杨银书,王祥生,李德昌。安徽省首次发现嗜群血蜱。
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Chapter Three: Type classification of DE structure in Sino-Tibetan languages.
第三章汉藏语&的&字结构的类型划分。