The lean combustibleconcentration and the 1/10 lean combustibleconcentration are close at the emission point, and they have a great difference at the leeward of the emission point.
贫可燃浓度和1/10贫可燃浓度在排放口附近相近，在排放口下风方向差别较大。
2
In the meantime, the concentration of the combustible gas and the number and distributive location of fire source have influence on the gas explosion propagation seriously.
同时指出参与爆炸的瓦斯量、瓦斯气体浓度和火源个数及分布位置对瓦斯爆炸传播有重大影响。
3
A combustible gas detector based on CAN bus is introduced. The hardware structure of CAN bus intelligent node is given. The combustible gas concentration measurement by software method is described.