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| 2019, Vol. 56(5): 195-200 DOI: | ||
| An Intelligent Device for Coring at Tunnel Vault and Corresponding Coring Hole Repairing Technology | ||
| (1 China Railway 11 Bureau Group Co., Ltd., Wuhan 430061; 2 Beijing-Shenyang Railway Passenger Dedicated Line Jingji Co., Ltd.,Beijing 100166; 3 Beijing HomeVic S&T Development Co., Ltd., Beijing 101500) | ||
| Received null Revised null | ||
| Supporting info | ||
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