pre-timbering with tubular prop - Globe Thesis

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Keyword [pre-timbering with tubular prop] Result: 1 - 2 \| Page: 1 of 1
1.	Shallow Buried Tunnelâ€™s Pipe Roof Pre-reinforcement Theory And Its Upper Limit Research Under Variety Of Pre-reinforcement
2.	Research On Pre-supporting And Excavation Methods’ Optimizationof Large-section Loess Tunnel
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