冲击地压是许多煤矿生产和技术管理中的难题之一,又是导致煤与瓦斯突出恶性事故的源动力。
Impact earth pressure is one of difficult problems in the production and management in many coal mines and it is the source power resulting in the coal and gas burst.
冲击地压是许多煤矿生产和技术管理中的难题之一,又是导致煤与瓦斯突出恶性事故的源动力。
Impact earth pressure is one of difficult problems in the production and management in many coal mines and it is the source power resulting in the coal and gas burst.
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