In this paper, we introduce the common probability-significance to the fuzzy system and put forward the fuzzy probability-significance which are connected with the common probability- significance more closely. By its definitions, we deduc a general formula of the fuzzy probability-significance and another formula based on the normal fuzzy-number for FTA.%将普通概率重要度引入到模糊系统中,提出了和普通概率重要度密切关联的模糊概率重要度.由其定义出发,又导出了模糊概率重要度的基本公式和基于正态模糊数用于故障树分析的计算公式.
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