There are three main problems with the ROI/paybackperiodmethod
ROI/偿还期方法有三个主要问题
2
However, this method has two shortcomings: (1) it ignores the time value of money and (2) it ignores the performance of the investments beyond the paybackperiod.
然而,这一方法有两个缺点:(1)它忽略了货币时间价值(2)它忽略了项目回收期以后的经营业绩。
3
The rate of power saving and paybackperiod were calculated with the analytical method of month by month.