任选的是, 可用加氢催化剂将纯化的二聚异丁烯加氢生成异辛烷.Optionally, the purified diisobutylene may be hydrogenated to isooctane hydrogenation catalyst.应用正碳离子聚合的方法合成新型聚异丁烯遥爪预聚物.The new telechelic prepolymers of polyisobutylene have been synthesize...
那仙女魔杖一挥，桌子不翼而飞。The fairy waved her wand and the table disappeared.罗马神话中有许多关于仙女的故事.There are many stories about the nymphs in Roman fairy tales.她的所见犹如被点化一般,似仙女下凡!How fairy - like does everything appear to her enchanted vi...
His misfortune preys upon his mind.他的不幸使她心中苦恼.The owl preys on mice.猫头鹰捕食老鼠.Wolf preys on various animals, securing some by craft, some by strength, and some by fleetness.狼捕食各种动物, 有的用狡计, 有的用强力, 有的靠捷速....