COAL ENGINEERING ›› 2017, Vol. 49 ›› Issue (8): 107-109.doi: 10.11799/ce201708030

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Analysis on Top Coal Broken Mechanism of Fully-Mechanized Caving Coal Faces

  

  • Received:2016-07-22 Revised:2016-12-12 Online:2017-08-25 Published:2017-09-25

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