Coal gas, watergas, producer gas and similar gases, other than petroleum gases and other gaseous hydrocarbons.
煤气、水煤气、炉煤气及类似气体，但石油气及其他烃类气除外。
2
Within the park, a power company, pharmaceuticals firm, wallboard producer and refinery share in the production and use of steam, gas and cooling water.
工业区里有发电厂、制药厂、墙板制造厂和提炼厂，它们共同生产和使用蒸汽、天然气和冷却水。
3
This paper analysed the principle of water-gasproducer and its calculation of thermal value, explained the feasibility of the boiler burning water-gas.