fire damp explosion 瓦斯爆炸
fire-damp tester 沼气检定器
fire-damp machine 防火式电机
fire damp proof machine 沼气式电机
fire-damp layer 沼气分层聚集
fire-damp explosion 瓦斯爆炸
fire-damp 甲烷 ; 沼气
N a mixture of hydrocarbons, chiefly methane, formed in coal mines. It forms explosive mixtures with air 沼气 → see also afterdamp
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