importance of basic event 基本事件重要度
Causality diagram methodology can be applied in fault analysis, however lack of analysis on basic event importance.
因果图理论可以进行故障分析，但是缺乏对基本事件的重要性的分析。
The main corrosion factors were determined based on the structure importance degrees of the each basic event obtained by quantity calculation and the order of the structure importance degrees.
定量计算了各基本事件的结构重要度及重要度排序，确定了影响腐蚀的主要因素。
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