The gas pressure is a main factor of deciding gascontent in coal seam. It is an important parameter of the dangerous prediction for coal and gas outburst too.
煤层瓦斯压力是决定煤层瓦斯含量的一个主要因素，也是煤与瓦斯突出危险性预测的一个重要参数。
2
Gascontent varies directly with depth of burial and working thickness, depth of burial is the main factor which influence the gas emission of Qixing mine.
瓦斯含量与煤层埋深、煤厚呈正相关关系，煤层埋深是七星矿井瓦斯含量的主控因素。
3
Sampling pre-treatment system is an important factor in magneto-dynamic oxygen analyzer system for detecting the oxygen content in coke oven gas.