Yang, Sanqiang
Huang, Yong
Funding for this research was provided by:
Natural Science Foundation of Hebei Province (E2018201106)
Hebei Province High-level Talents Funding Project (B2017005024)
Department of science and technology, Ministry of transport (2016009)
Department of science and technology, Ministry of transport (2016010)
Department of international cooperation, Ministry of science and technology (CU03-32)
Hebei Provincial Department of transportation (TH-201918)
Hebei Provincial Department of transportation (TH-201925)
Xinjiang Uygur Autonomous Region Fund Committee (2018E02075)
Article History
Received: 27 February 2020
Accepted: 3 June 2020
First Online: 23 July 2020
Compliance with ethical standards
:
: There are no potential competing interests in our paper.