defective index

例句：

1. 1. The company's defective index has been steadily increasing over the past year.
   该公司的缺陷指数在过去一年内稳步上升。
2. 2. The new product has a defective index of 0.95, which issignificantly lower than the industry average.
   新产品的缺陷指数为0.95，远低于行业平均水平。
3. 3. The defective index is an important indicator for evaluating the quality of a product.
   缺陷指数是评估产品质量的重要指标。