Ai, Yan-Jun
Li, Fu-Ping
Gu, Hai-Hong
Chi, Xiao-Jie
Yuan, Xue-Tao
Han, Dong-Yun
Funding for this research was provided by:
Natural Science Foundation of Hebei Province (E2015209300)
Educational Commission of Hebei Province, China (BJ2014029)
Scientific and Technological Research Foundation for the Selected Returned Overseas Chinese Scholars, Department of Human Resources and Social Security of Hebei, China (CL201633)
Science and Technology Planning Project of Tangshan, China (14130235B)
Science and Technology Planning Key Project of Tangshan, China (19150247E)
Key Project of Hebei Province, China (19224204D)
Article History
Received: 30 December 2019
Accepted: 29 April 2020
First Online: 4 June 2020