Circular polarization in two active repeating fast radio burstsFeng, Yi; Zhang, Yong-Kun; Li, Di*; Yang, Yuan-Pei; Wang, Pei; Niu, Chen -Hui; Dai, Shi; Yao, Ju-MeiScience Citation Index Expanded云南大学; 中国科学院研究生院; 中国科学院摘要-关键词-