城市: city; town; abad; conurbatio ...煤气: coal gas; gas供热: heat addition; supply heat; ...城市煤气供应: town gas supply城市煤气: city gas; town gas城市煤气管道: town gas pipe城市煤气；家用煤气: town gas城市煤气；民用煤气。: town gas城市煤气代用品: town gas substitute氧气-城市煤气切割: oxy-town-gas cutting氧气-城市煤气烧嘴: oxy-town gas burners都市煤气: town gas废气供热: heating by waste heat燃气供热: gas heating中国城市煤气技术发展中心: china urban gas technology development center水 气供热系统: water air heating system煤气供暖: gas heating煤气供暖机: gas heater煤气供应: gas supply煤气供应局: public body controlling the supply of gas for domestic and industrial use煤气供应网: gas distribution network煤气供应站: gas distribution plant点火煤气供应: ignition gas service煤气供给管线: gas feed line煤气供暖机组: gas heater
