In the gas accident, Opened outburst coal seam caused accident harm which is particularly serious.

在瓦斯事故中，揭开突出危险煤层造成的突出事故危害尤为严重。

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In the gas accident, Opened outburst coal seam caused accident harm which is particularly serious.

在瓦斯事故中，揭开突出危险煤层造成的突出事故危害尤为严重。

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