Cheng, Xuansheng
Gong, Lijun
Fu, Xuedong
Funding for this research was provided by:
the National Natural Science Foundation of China (51478212)
the Zhejiang traffic quality supervision bureau (ZJ201602)
science and technology project in China Railway 12th Bureau Group (14B-3)
Article History
Received: 23 November 2017
Accepted: 22 April 2018
First Online: 5 July 2018
Compliance with Ethical Standards
:
: The authors declare that there is no conflict of interests regarding the publication of this paper.