ISSN 2096-4498

   CN 44-1745/U

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Tunnel Construction ›› 2020, Vol. 40 ›› Issue (7): 1098-1099.

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Statistics on Boring Machine in China in 2019

SONG Zhenhua   

  1. (Boring Machine Branch of China Construction Machinery Association, Shanghai 200235, China)
  • Online:2020-07-20 Published:2020-07-30