functional group retention index

例句：

1. 1. The functional group retentionindex is a measure of how well thesystem retains information.
   功能性组保留指数是衡量系统信息保留能力的一个指标。
2. 2. Thefunctional group retention index was used to evaluatethe effectiveness of the new software.
   功能性组保留指数被用来评估新软件的有效性。
3. 3.The functional group retention index has been shownto be an important factor influencing the performance of the system.
   功能性组保留指数已被证明是影响系统性能的一个重要因素。