rate-of-change indicator

例句：

1. 1.The company's sales rate of change has increased significantly in the past year.
   该公司的销售变化率在过去一年内显著提高。
2. 2. The rate of change is a critical factor in determining the success of any project.
   变化率是决定任何项目成功的关键因素。
3. 3. The rate of change can be measured using various statistical methods.
   变化率可以通过各种统计方法进行测量。