故障树模型是导致系统失效的基本事件之间逻辑关系的图形表示，应用于系统失效模型的定性和定量分析。
Fault tree model is the graphical expression of connection of basic events which result in system fault, and used in qualitative and quantitative analysis of system fault model.
文中对引起水套炉发生失效的各个因素进行系统分析，建立了以水套炉失效为顶事件的失效故障树。
All factors that may make the waterjacket heater failure was analyzed in the paper, and builds a fault tree with failure of water-jacket heater as top event was set up.
在传统的故障树分析中，类似人为错误的模糊、不精确事件不能得到有效地处理。
In conventional fault tree analysis (FTA), the ambiguous and imprecise events such as human errors can not be handled effectively.
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