查询词典 marginal distribution density function

The dominante race of SCN is still race 3 in Heilongjiang Province. But the SCN race 3 changed into race 4 and 14 in Daqing City and Anda City, indicating some changes happened in Heilongjiang. A distribution map of soybean cyst nematode in Heilongjiang was drawn , which made clear the style and distribution of SCN race in Heilongjiang, and provide the basis for soybean breeding for SCN resistance species and the rational distribution of resistant cultivars.2. Soybean cyst nematode, Heterodera glycines Ichinohe, populations were selected on eight soybean Glycine max L.

大豆胞囊线虫3号生理小种仍然是黑龙江省大豆胞囊线虫的优势小种，大庆市和安达市由原来SCN3号生理小种分别变为4号和14号生理小种，表明黑龙江省SCN生理小种稳中有变；绘制了黑龙江省大豆胞囊线虫分布图，明确了黑龙江省SCN生理小种的类型和分布，为抗线育种及抗线品种合理布局提供依据。2。

According to all-around investigating on wild Lonicera fragrantissima in various mountainous areas of Henan Province, this article has maken clear Lonicera fragrantissima regional distribution, Total resources quantity, biologic characteristics, ecologic characteristics, natural distribution patterns, the value of development and utilization, using form, cuttage and breeding technology, the collection and protection of wild idioplasmic resources and so on. It detailedly describes wild resources distribution, biologic characteristics and ecologic characteristics. It has classified and selected a batch of superior trees according to the differences in fruits shape, fruits color, leaf shape and shape of the crown of trees. It has based on the nutrition and medication ingredient analyzed the using methods of fruits and leaves, and the way of exploitation.Through the experiment on Lonicera fragrantissima cuttage and breeding technology, transplant and domestication technology, it has provided the concrete technical measure of idioplasmic resources use and the preservation for Lonicera fragrantissima.

本文通过对河南省各山区野生郁香忍冬资源的全面调查与研究，摸清全省郁香忍冬资源的区域分布、资源总量、生物学特性、生态学特性、自然类型与经济性状、郁香忍冬的开发利用价值、利用形式、扦插育苗技术和野生种质资源收集保存与保护方法措施等，对河南省郁香忍冬野生资源的分布，生物学特性、生态学特性进行详细描述总结；根据果形、果色、叶形、冠形的差异性进行了类型划分，并选出了一批优树；根据果实、叶片中的营养与药用成分分析、果、叶利用方法研究，分析了其开发利用途径，并开展了郁香忍冬扦插育苗试验和苗木移栽训化试验，为郁香忍冬种质资源利用和保存提供了具体技术措施，其主要结果如下： 1、郁香忍冬属中性偏阳的低矮灌木树种，在灌木坡上当其处于上层空间时或纯林分布时，生长最好。

The results showed that:(1)All of the five legume grass in Songnen Plain displayed assembling distribution pattern at inter-community level, of which Lathyrus quinquenervius,Vicia multicaulis,Lathyrus hedysaroides,Lathyrus davurica displayed assembling distribution pattern at intra-community level, while Medicago ruthenica tended to be random distribution.

结果表明：（1）松嫩平原五种豆科牧草在群落间大尺度层次上均表现为聚集分布格局；在群落内，五脉山黎豆，多茎野豌豆，细叶胡枝子，兴安胡枝子均表现为聚集分布；花苜蓿的聚集程度较低，并趋于随机分布。

It should be a direction type of efficiency that the government assigns mandatorily. Under the condition of market economy, the income gap of having certain degree is rational ,it is effectual too; Of our country the main cruxeses of unfair distribution of social wealths are the unfair income assign terms and assigning process.vlndividual income tax has little effect in changing this, so it is unfit to put too much blame on the individual income tax law about the current situations of unfair distribution of social wealth; To regulate the income distributes is a system, and managing income unfair distribution should be arranged and develop simultaneously more measures too.

在市场经济条件下，有一定程度的收入差距是合理的，也是有效的；我国社会分配不公的主要症结所在是收入分配条件和分配过程不公平，个人所得税对此所能发挥的作用是极其有限的，因此不能将社会分配不公的现状过多地归责于个人所得税法，要求在指导思想和制度上提高公平特别是实质公平的程度；收入分配的调节是一个系统，治理收入分配不公也应当多措并举。

The time-frequency distribution of the surface myoelectric signal was computed by means of STFT、Wigner-Ville distribution and Choi-Williams distribution.

用短时傅里叶变换、Wigner-Ville分布及Choi-Williams分布计算了表面肌电信号的时频分布，用于信号频率内容随时间演化的可视化观察。

Based on the distribution of the genera in the world,the eight distribution types of the genera were divided.In addition,the distribution characters of the Perlidae in China were also probed preliminarily.So far two subfamilies,four tribe and twenty genera have been found in China.Ten of them,of which three genera are endemic to China,are the Oriental genera;one Palaearctic genus;three Oriental-Palaearctic genera;one Oriental-Nearctic genus;four Oriental-Palaearctic-Nearctic genera and one Oriental-Palaearctic-Nearctic-Afrotropical genus.

文中还就中国郋科昆虫的地理分布及特点作了初步的探讨，结果表明：在我国已知的2亚科4族20个属中，东洋区分布的有10个属，其中有3个属仅分布于我国；古北区分布的有1个属；东洋-古北区分布的有3个属；东洋-新北区分布的有1个属；东洋-古北-新北区分布的有4个属；东洋-古北-新北-非洲区分布的有1个属。

On the distribution types of genera and species, Pantropic distribution type was the dominant, followed by north temperate distribution type, which showed the characteristic of transitionality.

科的分布区类型中，泛热带分布型36科，世界分布型34科，分别占总科数的31.30%和29.57%；属和种的分布区类型中，都是泛热带分布最多，北温带分布紧随其后，表现出区系过渡性的特点。

Phytogeographical distribution: Firstly,the geographical distribution map of each species are given,basing that,distribution pattern of each species in each series and that of each series in each section are discussed.

在亚洲植物区系的研究中具有独特的重要地位，又有突出的资源价值和生态意义，致使本属的研究工作十分广泛[1~7]，但是，由于工作繁杂等原因，缺少对本属分布系统的研究资料。

The distribution of prolyl peptide bond conformations, Ramatrandran distribution, atom distance of main chain, distribution of conformation energy after 300 times simulated annealing are analyzed.

通过模拟退火的分子动力学方法，对2种BPP分子的4种构象(cis-BPP-5b、trans-BPP-5b、cis-BPP-9a、trans-BPP-9a)在经过300次模拟退火后的脯氨酸肽键的构象分布、Ramatrandran分布、主链上原子距离、构象能量的分布进行了统计分析。

Purpose In this research, we applied three modeling methods to strive for accurately forecasting thepotential distribution of invasive species-Solenopsis invicta in China. Furthermore, we also researchedthe relationship between potential geographic distribution of S. invicta and environmental factors indetail to understanding how environment factors restricted distribution of Solenopsis invicta innon-suitable areas of Chinese mainland. The achievement of research provides a theoretical basis, whichcould guild the next step for the prevention and control stratagem ofS.

研究目的与意义：本研究通过3种不同机理的分析生物分布预测模型进行建模分析，力求准确预测入侵物种红火蚁在中国的潜在分布范围，并明确红火蚁潜在地理分布与环境因素之间的关系，同时找出在中国大陆地区非适生区限制其分布的影响因素。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。