ISSN 2096-4498

   CN 44-1745/U

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Tunnel Construction ›› 2019, Vol. 39 ›› Issue (9): 1385-1389.DOI: 10.3973/j.issn.2096-4498.2019.09.001

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China Railway Tunnel Group Co., Ltd.,   

  • Online:2019-09-20 Published:2019-09-25