Ethen.埃特(在比利时；东经 5º35' 北纬 49º35')ETabbr.东部时间（=Eastern Time)abbr.外星人（=extraterrestrial）ethyl iso-butyrate异丁酸乙酯et cetera assumption类推ethyl fluid blending乙基液调合ethylisosulfocyanide[化] 异硫氰酸乙酯ethylketocyclazocine乙基氯代环唑星, 乙基氧代环唑星ethiny-loestradiol乙炔雌二醇ethyl phospho-acid乙膦酸etilogical treatment病因治疗Ethvlis Aminobenzoas苯佐卡因, 对氨苯甲酸乙酯[局麻药]ethnologic documents民族文献