将韧性度的优化设计理论运用于交通运输网络。
Analyze and study the traffic network system by using the optimal theory of the tenacity.
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。
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.
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