observed cumulative failure probability

例句：

1. 1.The company has a history of cumulative growth.
   该公司有累积增长的历史。
2. 2. Theproject is designed to achieve cumulativesavings.
   该项目旨在实现累积节省。
3. 3. The teamworked diligently to achieve cumulative progress.
   团队勤奋工作以实现累积进步。