... 调查研究问题 look into a problem 回顾调查研究retrospective survey study 可调查研究的 investigable ...
2
?回顾性调查
回顾性调查
双语例句
1
Methods: Using the methods of retrospectivesurveystudy, 270 senile patients who had intact clinical data during 1987-1998 for the first implantment were analysed.
方法:将1987~1998年间270例首次入院植入心脏起搏器的临床资料进行回顾性分析。
2
Methods Retrospective epidemiological cohort study and field survey were conducted for dermatological examination, occupational hygiene and occupational exposure history for 2 876 workers.