butylene的音标：butylene的英式发音音标为：['beti:li:n]butylene的美式发音音标为：['betilin]...

Its main components include propane, butane and butylene.主要成份是丙烷 、 丁烷、丁烯等.Catalytic oligomerization of remain butylene is a way for enterprises to rebottle andpotentialities for more benefits.剩余丁烯催化齐聚是企业消除瓶颈、挖潜增效的途径.By m...

n.丁烯...