a mixture of gases (mostly methane) that form in coal mines and become explosive when mixed with air
造句
automatic firedamp alarm
自動瓦斯報警器...
firedamp limit
瓦斯極限含量...
firedamp outburst
沼氣突出
explosion of firedamp
煤氣爆炸
firedamp testing
瓦斯測定
firedamp detector
沼氣檢定器
firedamp indicator
瓦斯指示器
firedamp drainage
排放瓦斯
layering of firedamp
瓦斯分層
firedamp explosion
礦內瓦斯爆炸...
近義反義詞
firean
fire
fire shrinkage
fire door jamb
fire main pipe
fire-control
fire-leading
fire break out
fire patrolman
fire endurance
fire explosion
fire intensity