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故障树分析方法是一种将系统故障形成的原因由总体到部分按树枝形状逐级细化的分析方法，对较复杂系统的设计对系统故障进行分析的有效手段。笔者近期采用故障树分析法对某厂生产的Y25型全液压汽车起重机液压系统起升回路的故障进行分析排除，使查找故障的准确率及效率大大提高
The fault tree analysis method is an effective method to analyze the system faults for the design of more complex systems by analyzing the cause of the system failure from the whole to the part by the branch shape step by step. The author recently adopted fault tree analysis of a plant Y25 full hydraulic truck crane hydraulic system lifting circuit failure to analyze and eliminate the fault finding accuracy and efficiency greatly improved