Coal Engineering ›› 2022, Vol. 54 ›› Issue (10): 141-145.doi: 10.11799/ce202210026

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Research on In-situ Sealed Coring Technology for CBM Content Samples from Surface Drilling

  

  • Received:2021-09-07 Revised:2021-09-22 Online:2022-10-14 Published:2023-01-06

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