2 Petroleum crude oil: Refers to naturally occurring crude oil that is mixtures of hydrocarbon compounds that contain mainly paraffin hydrocarbon, cycloparafin hydrocarbon, and aromatic hydrocarbon.
2 Petroleum crude oil: Refers to naturally occurring crude oil that is mixtures of hydrocarbon compounds that contain mainly paraffin hydrocarbon, cycloparafin hydrocarbon, and aromatic hydrocarbon.
二石油原油：指一种源于自然界之原油，为碳氢化合物之混合物，其主要成分为石蜡烃、环烷烃、芳香烃等。