The payback period can be as short as seven years.

偿付期可以短至7年。

There are three main problems with the ROI/payback period method

ROI/偿还期方法有三个主要问题

The payback period for the project is expected to be about 5.75 years.

该项目回收期预计约为5.75年。

A replacement instrument must have, at most, a five-year payback period.

一次仪器更换至多必须有五年的偿还周期。

Ground water heat pump; Energy-efficiency; Cost-effective; Payback period.

地下水源热泵；节能性；经济性；回收期。