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mine explosive gas
expl.
矿井爆炸性气体
开采煤矿和含碳质页岩的非煤矿床时,从煤层和岩层中涌岀的爆炸性气体。其主要成分是甲烷,即沼气,以及少量的氢气、一氧化碳、硫化氢、二氧化硫和碳氢化合物
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