Twenty miners were trapped underground after the gas explosion. 瓦斯爆炸后有二十名礦工被困井下。
The results show that the explosion flame is very long with cohesive force, and propagates along the bottom of the pipe. 結果表明，瓦斯爆炸火焰是沿著(zhù)管道的底部向前傳播的，火焰長(cháng)度較長(cháng)，并具有較高的內聚力。
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