[mass noun](Chemistry)a colourless liquid hydrocarbon of the alkane series, present in petroleum spirit (化)癸烷,十碳烷
Chem. formula: C10H22 many isomers, especially the straight-chain isomer (n-decane), which is used as a solvent and in jet fuel research 化学分子式: C10H22有许多异构体,尤指直链异构体(正癸烷),用于喷气燃料研究和作溶剂