When used as a "bottom-up" tool FMEA can augment or complement FTA and identify many more causes and failure modes resulting in top-level symptoms.
如果作为一种“自下而上型”工具，FMEA则可以对FTA起到增强或补充作用，发现和确定多得多的，导致顶层症状的原因和失效模式。