分类
- 与 分类 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
The acquirement and expression of knowledge include two aspects: the first is that the spectrum knowledge of each land use type is automatically obtained from old land use map matched and overlain with remote sensing images; the other is that the changing knowledge of land use types are collected and analyzed, and changed into prior knowledge and probability.
二是通过对研究区各土地利用类型变化特点进行分析研究,并从中得到原有各土地利用类型经数年后变成其它类型的可能性及其大小。并将其定量化表达成新遥感图像上各类型的先验性概率。在知识的应用和分类方面,分别对原土地利用各类型所对应的遥感图像进行知识的应用和处理,利用各自可能出现的类型及其各类型的先验性概率进行最大似然法分类。
-
Furthermore, the sensitivity was 100.00% in nine species, including human cytomegalovirus, simian virus 40, mareks disease virus, rhesus lymphocryptovirus, Epstein Barr virus, xenopus laevis, canis familiaris, ovis aries and macaca mulatta.
与MiRscreen和其它六种分类器相比,SVMensembler_50在敏感性和特异性方面均具有最优的性能,对独立测试集的AUC值达到0.935,远高于MiRscreen和其它六种分类器。
-
This study provided some new evidences for the phylogenetic relationships of Rhopalocera butterflies and its subgroup Papilioninae through the primary and secondary structure analyses of 16S rRNA gene sequence, aiming at setting up a more scientific and reasonable systematics category for the butterflies, especially for those distributed in our country.
本研究通过对凤蝶亚科以及蝶类各主要类群的16S rRNA基因序列的一级和二级结构的系统学分析,旨在为蝶类的系统分类和系统演化研究提供一些分子佐证,为进一步建立一个更为科学的自然分类系统提供部分相关基础资料。
-
In order to settle the problem that traditional methods can not classify noisy data, the algorithm chooses the boundary region of rough sets as the criteria of selecting partitional attributees.
该算法采用β-边界域作为选择分类属性的标准,因此解决了不能对噪声数据进行分类的问题。
-
The birds of Passeriformes are the group which are the largest number, the most species, the highest station of evolvement and the broadest adaptive radiation of existent aves. The traditional taxonomy were onlyaccording to morphologic and behavioral characters, however their morphologic and behavioral characters are so complicated that we could not differentiate some species easily. Therefore we had some taxonomic research by molecular means in order to supply traditional taxonomy.
雀形目是现存鸟类中种类最多、数量最大的、演化地位最高、适应辐射最广的类群,传统的分类方法仅依据形态和行为特征来划分,但由于该类群的形态及行为特征复杂使得部分种类不易区分,因此有必要依据分子手段研究其系统发生关系、以盼能对经典的分类方法给予补充。
-
According to the rudiment epidemiological investigation in our country. The ratio of male to female is 1:3. RA regardless of for traditional Chinese medicine or Western medicine, is still a kind of difficult treat disease. Major is the cause of this disease with pathologyical mechanism lack all-sidely thorough understanding, and lack peculiarness laboratory index in the early stage of disease, so early diagnosis is very difficult.
我国经过初步流行病学调查,RA发病率为0.3~0.5%,男女发病比例约为1:3,西医对本病病因和发病机制认识尚欠清楚,缺乏具有针对性的特效药物;虽然据临床报道中医药对RA具有良好的治疗效果,但由于RA的中医证候分类繁多,目前尚无统一证候分类标准,临床疗效观察缺乏可重复性,严重制约了中医对RA研究的深入开展。
-
A high failure rate of stand-alone, short-segment pedicular fixation in the setting of thoracolumbar burst fractures prompted the development of the load-sharing classification system of thoracolumbar fractures, which allowed guidance in understanding the potential for failure of posterior instrumentation alone in the setting of significant disruption of the anterior vertebral body.
在胸腰椎爆裂骨折中,单独使用短节段椎弓根内固定,有较高的失败率,从而促进了Load-sharing分类的发展。Load-sharing分类为我们理解在前柱严重碎裂的情况下单独使用后路内固定器械而潜伏的内固定失败,提供了指导依据。
-
The average taxonomic distinctness Δ+ was the highest in the southern Yellow Sea and lowest in the central Yellow Sea; the spatial variations were largely caused by the different spatial distributions of species belonging to orders Perciformes, Pleuronectiformes, Clupeiformes and Scorpaeniformes, especially those of cartilaginous species.
在区域尺度上,分类多样性指数Δ,分类差异指数Δ+在黄海中、北部较高,南黄海较低;等级多样性指数Δ+为南黄海最高,中黄海最低,其区域尺度变化主要是由鲈形目、鲽形目、鲱形目和形目种类,特别是软骨鱼类的种类数的分布变化造成的。
-
According to the phytosociological theories and methods of Braun-Blanquet's school, the regional savanna vegetation of the dry-hot valleys of Yuanjiang river had been investigated. Based on the principle of fidelity degree, the typical 110 releves taken from every sampling stands of the dry-hot valleys were sorted up from below to upper into 15 Associations, then into 5 Alliances, 2 Orders and 1 Class. A synoptic classification system of Class-Order-Alliance-Association was established for the purpose to reflect deeply the characteristics of all syntaxa there in the aspect of plant component and their abundance-dominancy, presence, cover coefficient, life form, growth form, and ecological environment, community structure, species types and so on.
采用Braun-Blanquet植物群落学研究的理论与方法,对云南元江中上游干热河谷分布的植被进行考察研究,把各处取得较典型的110个样地记录按确限度的原则由下而上归类成15个群丛、5个群属、2个群目和1个群纲,建立了元江干热河谷萨王纳植被群纲—群目—群属—群丛分类系统综合表和15个群丛表,以全面深入反映全干热河谷植物群落各级分类单位中各植物种类组成的多优度、存在度、盖度系数、生活型和生长型等特征及其群落结构、生态环境和种型类别。
-
In some classifications the family of the genus Xenopus which is otherwise included in the family Pipidae.
在某些分类中,是爪蟾属的一科,但在其他一些分类中被归于负子蟾科。
- 推荐网络例句
-
Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.
最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势,并设计了一款彩色夜视摄像机。
-
Only person height weeds and the fierce looks stone idles were there.
只有半人深的荒草和龇牙咧嘴的神像。
-
This dramatic range, steeper than the Himalayas, is the upturned rim of the eastern edge of Tibet, a plateau that has risen to 5 km in response to the slow but un stoppable collision of India with Asia that began about 55 million years ago and which continues unabated today.
这一引人注目的地域范围,比喜马拉雅山更加陡峭,是处于西藏东部边缘的朝上翻的边框地带。响应启始于约5500万年前的、缓慢的但却不可阻挡的印度与亚洲地壳板块碰撞,高原已上升至五千米,这种碰撞持续至今,毫无衰退。