“before-and-after” test An analysis of a country or region before and after the completion of a project.
“before-and-after” test An analysis of a country or region before and after the completion of a project.
“事前事后”试验指在一个项目完成之前和完成之后，对一个国家或地区所作的分析。
“before-and-after” test An analysis of a country or region before and after the completion of a project.
“事前事后”试验指在一个项目完成之前和完成之后，对一个国家或地区所作的分析。