搜索结果: 1-1 共查到“凹凸棒石 Non-Coal Strata”相关记录1条 . 查询时间(0.073 秒)
A Study on Forming Mechanism of Gas Tunnel in Non-Coal Strata
Forming Mechanism Gas Disaster Gas Tunnel Non-Coal Strata
2011/12/21
In addition to the gas tunnel in coal strata, there are a large number of gas tunnel in non-coal strata, these tunnels itself do not through the coal strata, but all encountered the gas problem in the...