Based on the previous research work of our work team and characteristics of the recycling application, the dissertation puts forward the concept of Recycling Element (RE) that is considered as the basic unit of DFR and products recycling analysis.

• 本文在课题组研究工作的基础上，针对产品回收应用的特点，提出了回收元的概念，作为产品回收设计与产品回收分析的基础；