A new function solving method based on function family is given by mapping the functional tree with the performance function.

当前较大规模的功能树组合求解方法存在解空间庞大、冲突定位困难的问题，对此提出了一种基于功能集族的功能求解方法。

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One method was getting the maximum and the minimum of the structural performance function by optimization, and then calculating the ratio of mean-value to deviation of the performance function.

一种方法是先优化得到结构功能函数的最大和最小值，再计算功能函数均值和离差的比值；

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First, the performance function is analyzed by the non-probabilistic set-based reliability model, and then the reliability of all regions in the normalized interval variable space is summed up.

该模型首先通过将功能函数进行非概率可靠性分析，然后将标准化区间变量空间所有区域的可靠度进行求和计算，从而给出结构的可靠度。

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So, if you look at any engineering system, the performance of that engineering system is a function of its design and its construction.

如果你们观察过工程系统，工程系统的性能就是,它的设计和构造的功能。

麻省理工公开课 - 固态化学导论课程节选

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