Uncertainty occurs when the probability distribution is unknown.
当概率分布未知时，就存在不确定性。
A random variable is a function that takes values based on a probability distribution.
随机变量是一个根据概率分布取值的函数。
Rather than arrive at a single number, you'll want to come up with a probability distribution that automatically builds in the appropriate risk adjustments.
相对于只提供单个数字，你将会希望列出一个自动嵌入相应的风险调整的概率分布情况。
The simulation is categorized as a sampling method because the inputs are randomly generated from a probability distribution that stands in for a real data population.
模拟是按照采样方法分类的，因为输入是根据代表真实数据总体的概率分布而随机生成的。
The probability distribution of Bidders valuation is symmetrical.
投标商估价的概率分布是对称的。
The probability distribution of errors is an essential problem in the theory of errors.
测量误差的概率分布是误差理论的重要问题之一。
We also give the probability distribution formula of hitting time about birth-death processes.
同时给出了关于生灭过程的击中时的概率分布公式。
Therefore, the core of EDAs is to estimate the probability distribution of the solution space.
因此，分布估计算法的核心在于估计解空间的概率分布。
The result is independent from the concrete from of the probability distribution of the measurand.
这个结果不依赖于被测量的概率分布的具体形式。
The probability distribution of gene frequency was studied by simulative method in finite population.
本文采用计算机模拟的方法，对有限群体中基因频率的概率分布进行了研究。
The probability distribution function and the characteristic value of the curvature ductility factor are presented.
近似得出曲率延性系数的概率分布函数和特征值。
And it also gives a method of determining rated parameters of circuit breaker opening time by probability distribution.
最后给出了基于概率分布确定断路器额定分闸时间参数的一种方法。
The probability distribution of basic variables and the procedure of solution of reliability norms with JC method are introduced, also.
介绍了各基本变量的概率分布和利用JC法求解可靠度指标的过程。
Bayesian learning is a probability method that makes optimal decision based on known probability distribution and recently observed data.
贝叶斯学习是一种基于已知的概率分布和观察到的数据进行推理，做出最优决策的概率手段。
The solution of this fractional order advection-dispersion equation is fractional stable probability distribution density with four parameters.
此方程的柯西问题的格林函数解是一分数稳定分布密度函数。
Major issues involved in risk analysis such as selection of probability distribution and setting correlation for risk variables are also discussed.
并还讨论了风险分析所涉及的一些主要问题，如概率分布的选择以及确定风险变量间的相关性。
A function of probability distribution of fading is derived and the deviation coefficient and probability coefficient of field strength are obtained.
并研究场强沿铁路的起伏规律，导出场强起伏的概率分布函数，得到场强偏差系数和概率系数。
On the basis of field geology survey, the probability distribution function of joint aperture is fitted and the availability of the fitting is verified.
在现场地质调查的基础上，对节理开度的概率分布函数进行了拟合，并进行了假设分布的有效性检验。
The joint probability distribution of them is analyzed, which is great valuable to construct the fatigue ice-load for offshore platform with ice-broken cone.
为更加合理地确定锥体平台结构的疲劳冰荷载，对冰力幅值和周期进行了联合概率分析。
In fact, great tragedies still happen now and then, and many parameters obey some kinds of probability distribution. Some of them change with the lapse of time.
然而现实是重大灾难仍然不时发生，很多参数其实是服从某种概率分布，并且有的参数随着时间的改变而变化。
The wave function and probability distribution of a particle in a infinite quantum cylinder well and particle moving in a quantum corral are briefly introduced.
简要介绍了圆形无限深势阱中粒子的波函数、概率分布等特性，以及量子围栏中粒子的运动。
The system consists of six subsystems, which are human computer interface, kernel, sets theory, probability distribution, stochastic phenomena and help subsystem.
该系统包括六个子系统：人机界面、内核、集合论、概率分布、随机现象和帮助子系统。
When we looked at this probability distribution for the occupancies of the levels, of course, what it says is at any temperature, he lowest level is the most probable.
当我们考虑，能级被占据的概率的时候，这个式子意味着在任何温度下，最低能量的状态总是最有可能被占据的。
The probability distribution and risk curve of schedule and cost are obtained by statistic analysis, providing a basis for risk evaluation of engineering projects.
通过统计分析得到进度和费用的模拟概率分布，进而得到进度和费用风险曲线，为评价工程项目的风险提供了依据。
The probability distribution associated with the random variable X describes the likelihood of obtaining certain values or ranges of values of the random variable.
概率分布是描述随机变量取某个特定的值或取某一区间范围内值的概率。
Instead of this single value, a random variable has a function that describes the likelihood of values for the estimate and is called the variable's probability distribution.
取代单个值，随机变量拥有描述估计值可能性的函数，该函数称为变量的概率分布。
The state of electron is described by wave function. Intensity distribution of single slit electron diffraction is derived by probability distribution of electron momentum.
电子状态用波函数描述，由电子动量的概率分布，得到电子单缝衍射的强度分布。
The state of electron is described by wave function. Intensity distribution of single slit electron diffraction is derived by probability distribution of electron momentum.
电子状态用波函数描述，由电子动量的概率分布，得到电子单缝衍射的强度分布。
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