作为本文主题的OD C方法(缺陷正交分类法)是一种集根源分析法和统计模型优点于一体的缺陷分析法。

As the topic of this paper, ODC (Orthogonal defect Classification) is a defect analysis method, which integrates the strongpoints of root analysis method and statistical model.

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故障树分析法是一种演绎分析的方法，考虑的是基本故障事件，追溯的是系统失效根源，深入到故障组合之中。

FTA (Fault Tree Analysis) is a deductive analyzing method, which considers the fundamental failure incidents, discusses the source of system troubles and goes deep into the failure groups.

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