
好词典

Derived from 'propyl' (a three-carbon alkyl group) + '-ene' (indicating an unsaturated hydrocarbon with a double bond). The term reflects its chemical structure as an alkene with three carbon atoms.
❶ 丙烯,一种无色易燃气体,化学式为C3H6,是石油化工中的重要原料,常用于制造塑料、合成橡胶等产品。
“Propylene is a key raw material in the production of polypropylene plastics.”
(丙烯是生产聚丙烯塑料的关键原料。)
“The chemical plant produces propylene through the cracking of petroleum.”
(这家化工厂通过石油裂解生产丙烯。)
propylene oxide — 环氧丙烷,一种由丙烯衍生的有机化合物,用于制造聚氨酯、溶剂和其他化学品。
“Propylene oxide is widely used in the production of polyurethane foams.”
(环氧丙烷广泛用于生产聚氨酯泡沫。)
propylene glycol — 丙二醇,一种无色无味的有机化合物,常用于化妆品、药品和食品中作为溶剂或保湿剂。
“Many skincare products contain propylene glycol to retain moisture.”
(许多护肤品含有丙二醇以保持水分。)