1) the project of changing fuel from coal to natural gas
煤改气工程
2) Fuel-switch projects for boilers
锅炉煤改气工程。
3) gas engineering
煤气工程
1.
Precautions against calamities & anti-seismic planning for urban gas engineering;
城市煤气工程抗震防灾规划
2.
Application of PE pipeline in the gas engineering;
PE管道在煤气工程中的应用
4) project for oil-fired boiler changing into coal-fired one
油改煤工程
6) oilburning into coalburning project
燃油改燃煤工程
补充资料：煤改质(见共炭化与煤改质)
煤改质(见共炭化与煤改质)
modification of coal
meigaizhi煤改质(modifieation of eoal)见共炭化和煤改质。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条