retrospective survey study meaning in English
回顾调查研究
Examples
- In this paper , based on the retrospective survey study of the present status of the present status of the technique and the actual need of the project and hospital , the intelligent electrocardiograph based on net is designed
本文在对国内外技术现状的充分调研后，结合课题研究和医院实际的需要，设计出了智能网络型的心电图仪。