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应用模糊集理论，把事件发生的概率描述为一模糊数。对柴油机动力装置主润滑系统进行了故障树定量分析，较好地克服了柴油机动力装置故障树分析中统计数据不足及变化等问题。
Apply fuzzy sets theory to describe the probability of occurrence as a fuzzy number. Fault tree quantitative analysis of the main lubrication system of diesel engine power plant has overcome the problems of lack of statistical data and changes in the fault tree analysis of diesel engine power plant.