There are usually accidents in coal mines, which are mainly gas explosion and dust explosion.

煤矿开采比较容易出事故，煤矿事故又主要是瓦斯爆炸和煤尘爆炸。

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There are usually accidents in coal mines, which are mainly gas explosion and dust explosion.

煤矿开采比较容易出事故，煤矿事故又主要是瓦斯爆炸和煤尘爆炸。

youdao