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煤矿井下的重大火灾往往与井下空气的流动有着密切关系,在研究发生火灾所采取的措施时,也应该掌握有关通风的多方面知
The major fires in underground coal mines are often closely related to the flow of downhole air. When studying the measures taken in the event of a fire, they should also master the various aspects of ventilation