A combustible mixture of nitrogen, carbon monoxide, and hydrogen, generated by passing air with steam over burning coke or coal in a furnace and used as fuel. Also called air gas发生炉煤气：含有一氧化碳、氢和氮的易燃的混合物，通常通过使带有水蒸汽的空气从火炉中燃着的焦炭或煤炭上方通过而产生，用作燃料 也作 air gas