Duan, Feifei
Xie, Xun
Funding for this research was provided by:
National Natural Science Foundation of China (11601116)
Doctoral Foundation of Hebei Normal University (No. L2016B02)
Department of Education of Hebei Province (QN2017090)
National Natural Science Foundation of China (11801031)
Beijing Institute of Technology Research Fund Program for Young Scholars
Article History
Received: 30 July 2019
Accepted: 10 January 2020
First Online: 6 February 2020