Methane is an inflammable and explosive gas and a major constituent of mine atmospheres, natural gas and gas fuels.
甲烷是易燃易爆气体，是矿井瓦斯及天然气等多种气体燃料的主要成分。
GX-1Exploding isolation type drawing signal switch used for mining is applicable to coal mine where has explosive gas and coal dust.
GX-1矿用隔爆型拉引信号开关适用于具有煤尘和爆炸性气体的煤矿井下，作为低压开关防爆电铃或其它小型声响设备。
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