查询词典 probability function

By using Visual Basic, based on NASTRAN finite element analysis, this paper developed an efficient and convenient software which can process automatically the result of NASTRAN analysis and establish the database, and compute the failure probability of structural element and system, plot the contour of failure probability.

在NASTRAN有限元分析结果的基础上，以Windows95为开发平台，以VisualBasic为开发工具，开发了一个效率高，使用方便的结构可靠性分析软件该软件可以自动处理NASTRAN的计算结果，建立数据库，计算结构单元和系统的失效概率，绘制结构失效概率分布云图等，为工程人员在有限元计算的基础上进一步进行可靠性分析提供了一个方便、快捷的工具

The probability distribution three-state models of field strength and its probability distribution images under different environments,which are suitable for LEO mobile satellite communication system , are established in this paper.

建立了一种适用于低轨卫星移动通信系统的场强概率分布三状态模型和不同环境下的概率分布模型曲线。

The idea of probability was introduced and a detail analytical method was established:exceedance probability field and visiting frequency field were used to analyze the results of time domain method in probabilistic analysis.

建立了一套详细的采用超标概率场、侵袭频率场分析时域法的计算结果的方法。

By the direction of the electric field, the probability of the carrier transmission along the chain increases, and the probability of the carrier transmission between the chains reduced.

在取向作用下，相邻分子链趋于平行分布，从而使载流子在链内传输的概率增加，链间传输的概率减小。

According to the definite relation of seismic motion weaken and the earthquake belt, seismicity parameter of the latent epicenter area, we applied the probability method to calculate the peak acceleration of bedrock in level of different probability level for field site.

利用地震危险性概率分析方法对大型一等工程－某大型水利枢纽工程所在的场址进行地震危险性分析；该拟建工程场址所在的西昆仑地震带是新疆境内地震活动强度最高、频度最大的地震带，拟建工程坝高库大，为了进行准确的地震危险性分析研究，本研究根据区域地震活动性及地震构造研究成果，确定了地震活动性参数，按照构造类比、历史地震重演原则划分了潜在震源区；在分析了区域地震活动环境和地震构造等因素后，综合评价其对场地地震危险性的影响；根据确定的地震动衰减关系及地震带、潜在震源区的地震活动性参数，应用概率方法计算得出了场地不同概率水平的水平向基岩峰值加速度。

In the collision energy range from 0.01 eV to 0.5 eV ,the reaction probability, the influence of rotational excitation of the reagent HBr on probability, the integral cross section and the rotational of the product HF are calculated.

在碰撞能为0.01~0.5 eV的范围内，计算了反应几率、反应物HBr分子的转动激发对反应几率的影响、积分散射截面和产物HF分子的角度分布。

Stochastic transition probability matrix is listed according to Markov theory,and the steady probability of each state is calculated.

根据马尔可夫理论列写了随机转移概率矩阵，求解了微机继电保护设备各种状态的稳态概率。

And based on this, the indexes of load probability characteristics are constructed to measure the load probability.

这需要我们补充新的负荷特性描述、分析方法，进行负荷概率特性的分析。

The theory of reliability is based on the probability . it considers the variability of all stochastic variable and use taut probability to measure

可靠度理论是建立在概率论基础上，考虑了影响滑坡体稳定的各项随机变量的变异性，并用严格的概率来度量。

Suppose is two-dimension random variable, call the probability distribution of measuremarginal distribution on for ; the probability distribution of measure Y marginal

Definition 3.6 设是二维随机变量，称分量的概率分布为关于的边缘分布；分量的概率分布为关于的边缘分布。

The statistical analysis of this large set of mutations has led us to propose a diagnostic strategy that should help with the molecular work-up of optic neuropathies.

这一大系列基因突变的统计学分析引导我们提出一个诊断策略，可以帮助我们对视神经病变进行分子学的诊断检查。

The results show that the pipe grouting changes the mechanical parameters of surrounding rocks to achieve the security of engineering objectives by reinforcing surrounding rocks and bolcking the water.

研究表明：小导管注浆一方面改变了围岩的力学参数，另一方面利用浆液的固结特性可以实现堵水和加固围岩的工程目标，使隧道在开挖过程中的安全得到保障。