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。
2
The ammonia comes from firedamp fermentation has been determined by ammonium - gas - sensitive electrodes with satisfactory results.
本文提出用氨气敏电极快速测定沼气发酵中氨的方法。
3
Firedamp flame propagation rules under obstacles are researched during the gas explosion process. The results show that obstacles have an important affection to the gas flame propagation speed.