He will have to answer for his impoliteness.他将因为无礼而受到责备.His impoliteness is more than we can stand.我们不能容忍他那么无礼.In addition , impoliteness, which occurs often and should have been studied aslong been neglected.然而尽管如此, 所有这...
Optionally, the purified diisobutylene may be hydrogenated to isooctane hydrogenation catalyst.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.The process comprises first oligomerizing isobutylene to diisobutylene using a sulfonic acid ty...