便携式自动瓦斯监测仪
portable automatic gas monitor
煤与瓦斯动力现象
Coal and Gas Dynamic Phenomenon
瓦斯动力现象
coal-gas dynamic phenomenon
dynamic phenomenon of gas
钻孔瓦斯流量法
method of gas flow in drilling hole
不可压湍流流动
incompressible turbulent flow
层流流动与换热
laminar flow and heat transfer
垂直举升流动动态
vertical-lift performance
单相湍流流动
single-phase turbulent flow