The reliability growth model combines with different defect type of ODC and projecting them on a common abscissa to make qualitative inferences.

• 提出将传统可靠性增长曲线模型结合正交缺陷分类属性缺陷类型,将不同种类的缺陷放在同一横坐标上进行比较,得出软件过程定性分析结论。