随机

A standard expected value model for multi-objective multi-stage transmission planning is presented to realize the transmission optimal planning with the control of line overloading risks. In this model, a constraint of overloading risks is built with expected value and standard deviation of random line active power and two objectives are given as expected value of the average power loss and discount value of the investment cost. By modeling uncertain informations with probability theory, the probabilistic DC power flow is adopted for the correlated calculations among random variables in the planning model.4 A novel multi-objective transmission planning approach that considers transmission investment profit is proposed. Requests for transmission investment profit and social welfare are involved in the proposed planning approach.

以方案总投资费用贴现值和平均网损期望值为目标函数，建立多目标多阶段输电网规划的期望值模型，以线路有功潮流过负荷随机变量的期望值和标准差构建过负荷风险约束，考虑了风险发生概率和严重程度两方面的特征，通过对不确定性信息的概率建模，利用概率直流潮流进行各随机变量的相关计算，实现了控制过负荷风险条件下的输电网优化规划。4提出考虑输电投资收益的多目标输电网规划方法，综合考虑市场参与者对输电投资收益和社会总福利的要求加热管及其对输电网规划的影响。

Using the analysis of the distribution indexes method, the results indicated that all distribution indexes of Halostachys caspica population, Haloxylon ammodendron population and Haloxylon persicum population accorded with congregated pattern within the scales of 1m×1m、2m×2m、4m×4m、8m×8m、16m×16m、32m×32m. And the T-test evidenced that the deviation from random pattern was obvious in 1~32m scale.

通过分布型指数法分析得出，在1m×1m、2m×2m、4m×4m、8m×8m、16m×16m、32m×32m的空间尺度上，盐穗木、梭梭、白梭梭种群的各项分布型指标均符合聚集分布，并且由扩散系数偏离随机分布的差异性t值检验验证了种群在1～32m尺度上显著偏离随机分布，呈聚集分布。

RANDOM ERROR - the mean of a large number of measurements influenced by random error matches the true value.

随机误差－受随机分布误差影响的大量测量结果的平均值与真值的偏差。

The finite element analysis method for truss structures with random parameters under random external temperature field was studied.

对随机参数桁架结构在随机外界温度场作用下的分析方法进行了研究。

The calculated results of the random field are compared with those of the traditional methods.

采用随机场的局部平均理论分析邓肯－张本构模型中对比奥固结沉降影响最显著的参数k，探讨岩土参数随机场对固结沉降的影响规律。

According to the geographic information system and the the random field, this paper studied designing the structure and function on the geography information system based on the random field of soil parameter.

本文以地理信息系统理论和随机场理论为指导，进行了基于随机场的地理信息系统的结构与功能设计。

Results of a theoretical study on random motion of a particle in turbulent fluid flow are presented in this paper.

本文应用随机过程论和统计物理学的理论，研究紊流中悬浮颗粒的随机运动。

In fact, the nature of investment, is a face of random events and random process of decision-making process.

其实，投资的本质，是一个面对随机事件和随机过程的决策过程。

According to fuzzy random variable theory, calculated method of fuzzy random characteristic quantity of system risk grade is given, which can be used to prediction risk assessment of system.

根据模糊随机变量理论提出了系统危险等级模糊随机特征量的计算方法，它可用于系统危险性的预测评价。

Based on fuzzy random theory, this thesis discusses the issue of the convergence for sequence of fuzzy random variables.

本文以模糊随机理论为基础，讨论了模糊随机变量序列的有关收敛性问题。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。