ETabbr.东部时间（=Eastern Time)abbr.外星人（=extraterrestrial）Etwalln.埃特沃尔(在英国；西经 1º35' 北纬 52º54')

1. Ethyl demethylaminothiazolyloximate is one of the important medical intermediates,which forms side chains of semisynthetic cephalosporins.
   去甲氨噻肟酸乙酯是合成头孢菌素类抗生素的重要中间体之一。