石油天然气工业
petroleum industry
oil and natural gas industry
Petroleum and Nature Gas Industry
Oil and Gas Industry
世界天然气工业现状
Status quo of the natural-gas industry
煤型气源天然气水合物
coal related gas source of natural gas hydrate
改燃天然气
changing to firing natural gas
富天然气
combination electric locomotive
富氦天然气
rich-helium type natural gas
风冷天然气发动机
air cooled natural gas engine
非常规天然气资源
unconventional gas resources
非常规天然气
unconventional natural gas resources
non-conventional natural gas
non-unconventional gas
Unconventional natural gas
unconventional gas