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*Dear Author! Warm greetings!* *WELCOME TO THE JOURNAL OF SOUTHWEST JIAOTONG UNIVERSITY ( Vol 55 , No. 2 - 2020)* <http://jsju.org/index.php/journal/pages/view/papersubmission> *Journal of Southwest Jiaotong University, (ISSN: 0258-2724) * is a peer-reviewed, multidisciplinary specialized international journal aimed at promoting research worldwide in fields of railway rolling stock, civil engineering, electrical engineering, electric traction and electronic technology, traffic and transport engineering, mechanical engineering, information science and technology, environmental science, materials science and engineering, applied physics, etc. Journal of Southwest Jiaotong University is abstracted and Indexed in Scopus, Geobase, Current Contents, Chemical Abstracts, etc. Visit this link <http://jsju.org/> for further details. <#> View last articles <http://jsju.org/index.php/journal/issue/archive> <http://jsju.org/index.php/journal/pages/view/papersubmission> You may submit your manuscript via online submission system or email: *edi...@jsju.org <edi...@jsju.org>* Please kindly let us know if you have any doubt. With best regards, Jessie Wang Secretary of the Editorial Office Journal of Southwest Jiaotong University 21,West park, High-tech Zone, Chengdu, China, 611756 tel: +86-28-87680417