Yang, Yang
Zhang, Runfang
Duan, Xiaojing
Hu, Zenghui
Shen, Man
Leng, Pingsheng
Funding for this research was provided by:
National Natural Science Foundation of China (31600498)
Key Project of Beijing Municipal Education Committee (KZ201510020021)
Project of Coustruction of Innovative Teams and Teacher Career Development for Universities and Colleges Under Beijing (IDHT20180509)
Article History
Received: 2 February 2018
Revised: 7 October 2018
Accepted: 20 December 2018
First Online: 8 January 2019