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）Etiological analysis病因分析etymological phoneme词源音位ethyl seleninic acid乙基亚硒酸ethyl isothiocyanide[化] 异硫氰酸乙酯etymlolgical phoneme词源音位ethyl tribromacetate三溴乙酸乙酯ethological function行为性机能ethylidenedicoumarol乙双香豆醇ethylidene dibromide亚乙基二溴,1,1-二溴代乙烷etymological cognate同源