Methane is inflammable and explosion hazard gas as the basis of mash gas, firedamp and rock gas.
甲烷作为瓦斯、天然气、沼气等的主要成分，是易燃易爆气体。
If this is done, the oxygen in the air will condense in the liquid hydrogen, presenting a possible explosion hazard.
如果这样做，空气中的氧会浓缩在液氢里，造成可能的爆炸危险。
Dust accumulation of more than 0.8 millimeters - covering at least 5 percent of a room's surface poses a significant explosion hazard.
粉尘沉积超过0.8毫米，覆盖房间表面达5%或以上时，会有重大的爆炸隐患。
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