acetylene
/əˈsetɪliːn/noun
1- Chemistry a colourless pungent-smelling hydrocarbon gas, which burns with a bright flame, used in welding and formerly in lighting【化】乙炔。
1.1
- Alternative name: ethyne; chem. formula: C2H2.又名： ethyne;化学分子式： C2H2.
词源
mid 19th cent.: from ACETIC ACID + -YL + ENE.