firedampn. 甲烷、沼氣瓦斯、密封防火牆(採礦)學術名詞沼氣：電工學、電機工程、礦冶工程、化學工程、食品科技、電力工程坑氣：電工學、電機工程、礦冶工程、電力工程甲浣：電工學、電機工程、電力工程英文釋義a mixture of gases (mostly methane) that form in coal mines and become explosive when mixed with air