内瓦斯 meaning in Chinese

nevas

Transmission characteristics of gas flame in pipelines with coal dust
有沉积煤尘的管道内瓦斯火焰传播特性
You will receive data from beijing science and power safety instruments co . , ltd . not only for combustible gas but also for gas supply
提供关于火灾区内瓦斯、（矿内）自燃气体以及煤气供应的信息。
Considering this point and by applying trend surface fitting method and its principles of model optimization , the correspondingly numerical relations between the change of gas content and its spatial distribution in luling coal mine are obtained , based on this result , an accurate , reliable and quantitative forecast of gas in deep stopes and unexploited region can be achieved
结合趋势面拟合及其模型优化的原理和方法分析得出了淮北矿业集团公司芦岭煤矿井田范围内瓦斯含量的变化及分布与其位置坐标的对应数值关系，依据该数值关系可对矿井深部采场和未开采区域实施比较准确、可靠的定量瓦斯预测。