Li, Shuying
Shen, Haie
Liu, Zhanjun
Li, Ning
Yang, Suxian
Zhang, Ke
Li, Jintao
Funding for this research was provided by:
the project of Science and technology for overseas scholars in Hebei Province (No.CY201620)
the project of Hebei education department (No.ZD2016003)
the Project of North China University Science and Technology (No. 28656002)
Beijing Municipal Natural Science Foundation (No. 5162003)