- 中国石油天然气集团公司 zhōngguóshíyóutiānránqìjítuángōngsī China National Petroleum CorporationChina National Petroleum Corporation (CNPC)
- 含油天然气 hányóutiānránqì petroleum gasnatural gas containing oil or liquid hydrocarbons; petroleum gas
- 天然气水合物 tiānránqìshuǐhéwù natural gas hydratea crystalline solid resembling ice that consists of natural gas molecules, typically methane, trapped within a lattice of water molecules
- 天然气汽车 tiānránqìqìchē natural gas vehiclea motor vehicle that uses compressed natural gas or liquefied petroleum gas as its fuel
- 液化天然气 yèhuàtiānránqì liquefied natural gasliquefied natural gas, consisting primarily of methane and used as a household fuel; often referred to by the abbreviation LNG