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建立挖掘机“铲斗挖掘无力的故障树”，定义了系统故障树最小割集矩阵和不交化最小割集矩阵，利用微机辅助故障树分析软件对铲斗液压缸系统的可靠性进行了分析研究。
An excavator was built to “cut the powerless fault tree” and the minimum and minimum cut-set matrices of the fault tree were defined. The reliability of the hydraulic cylinder system of the bucket was analyzed using the computer-aided fault tree analysis software. the study.