查询词典 probability distribution function

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。

For more exact modeling population distribution condition and more expressly reflecting population spatial pattern in urban region,with the fifth census data of Shenyang City,in this paper we spatialize population data by using grid calculating,model population distribution by using Geo\|statistics,identify population pattern by using DEM models and analyze characters of population distribution.

为准确地模拟城市人口分布，清晰地反映城市人口分布格局，本文利用沈阳市第五次人口普查资料，采用网格计算方法空间化人口数据、地统计学的空间插值方法模拟人口分布。

The distribution network optimization program based on that can further enhance the security and efficiency of the distribution system while assuring that the distribution network is spokewise and satisfies the heat capacity of feeder lines, voltage reducing and transformer capacity.

在此基础上制定的配网优化方案能够在保证配网呈辐射状、满足馈线热容、电压降落要求和变压器容量等的前提下，最大限度提高配电系统安全性和经济性。

Distribution is the tache in the logistics activity with consumer connected link directly, logistics distribution for vehicle routing problem, is a pivotal tach of the logistics distribution optimization.

配送是物流活动中直接与消费者相连的环节，而车辆运输调度又是物流配送优化中关键的一环。

Computational results indicate that the distribution of near-field intensity deviated from the uniform distribution and near-field phase approximated the uniphase distribution in the NF and m range studied.

结果表明，在所取的NF范围内近场光场强度的空间分布偏离均匀分布，但相位近似为均匀分布。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样