• Regarding the extremely thin coal bed coal and the gas prominentpossibility analysis, in formerly practiced was a blank, therefore inthe production process knew and took the degree to be insufficient.

    对于煤层瓦斯的突出可能性分析以往实践中是个空白所以生产过程中认识重视程度不够。

    youdao

  • Regarding the extremely thin coal bed coal and the gas prominentpossibility analysis, in formerly practiced was a blank, therefore inthe production process knew and took the degree to be insufficient.

    对于煤层瓦斯的突出可能性分析以往实践中是个空白所以生产过程中认识重视程度不够。

    youdao

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