On the basis of analysing the system of reliability, fuzzy comprehensive evaluation of the systematic reliability of the multidirectional electric forklift is made.

在综合分析可靠性评判指标体系基础上，对万向电动叉车系统可靠性进行了模糊综合评判。

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Fuzzy average equivalent dynamic load of arm bearing is calculated by using fuzzy mathematics method and fuzzy comprehensive evaluation. Fuzzy reliability life of arm bearing is calculated.

利用模糊数学方法，通过模糊综合评判，确定了转臂轴承的模糊平均当量动载荷，并计算了转臂轴承的模糊可靠性寿命。

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Relevant models are also built in this paper. The maintenance optimal system of power plant equipment based on fuzzy comprehensive evaluation is put forward from reliability, economy and security.

对所制定的维修决策分别从可靠性、经济性、安全性三个方面进行优化，提出了基于模糊综合评判的电站设备维修优化体系。

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