COAL ENGINEERING ›› 2015, Vol. 47 ›› Issue (1): 22-24.doi: 10.11799/ce201501007

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Research and Design on Synchronous Counterweight type Shaft Explosion door

  

  • Received:2013-12-15 Revised:2014-02-17 Online:2015-01-10 Published:2015-01-10