Making the most-unwanted event as the top event, the system faults and unit faults and parts faults effecting on the system were analyzed with the modeling method of FTA based on figure deduction.

• 故以系统最不希望发生的事件为顶事件，采用基于图形演绎故障树建模法分析系统故障状态和部件故障对系统的影响。