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.
故障树和因果图都采用图形表示因果关系，都主要用于故障诊断和故障分析。
Both fault tree and causality diagram are able to express causation by digraph, and both are usually applied to diagnose and analyze system fault.
故障树和因果图都采用图形表示因果关系，都主要用于故障诊断和故障分析。
Both fault tree and causality diagram are able to express causation by digraph, and both are usually applied to diagnose and analyze system fault.
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