By applying finite element method and optimal design theory this paper carried out an optimal design model of the machine tool shaft, chosen optimal methods and given a living example.
运用有限元法和优化设计理论，建立机床主轴结构设计的优化数学模型，选择优化方法，进行了实例计算。
This paper deals with the problems of the optimal control of the airplane landing in presence of atmospheric turbulence with application of the theory and methods of random optimal control.
论述了应用随机最优控制理论的基本原理和方法，解决飞机在大气紊流中着陆的控制问题。
Using the theory of multiple objective optimization, the paper sets up the model of optimal allocation for maintenance machinery; and presents the practicable methods and procedures for the model.
基于多目标优化理论，建立了养护机械优化配置模型，并给出一种求解方法——逐步宽容约束法。
The theory and methods of mathematical statistics were used to optimal estimation, testing and analysis on data of radar accuracy testing. The problem of decision making and testing were solved.
运用数理统计的理论、观点和方法对制导雷达精度检验中的数据进行了最优估计、检验和分析，解决了雷达精度的检验、判定和决策问题。
The theory and methods of mathematical statistics were used to optimal estimation, testing and analysis on data of radar accuracy testing. The problem of decision making and testing were solved.
运用数理统计的理论、观点和方法对制导雷达精度检验中的数据进行了最优估计、检验和分析，解决了雷达精度的检验、判定和决策问题。
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