对于功能函数中含有模糊分布参数(FDP)的随机变量问题，如何准确且简便地评估其可靠性，是十分重要的。

For a problem with performance functions which include random variables with fuzzy distribution parameters (FDP), it is important to evaluate their reliability accurately and rapidly.

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本文综合考虑齿轮传动设计中设计参数的随机性和模糊性，提出齿轮传动的模糊可靠性设计方法，推导出其模糊可靠度的计算公式，并给出了设计实例。

Some design parameters of gearing are fuzzy chance variables. This paper presents a method for the fuzzy reliability design of gearing and gives the calculating formulas and design examples.

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