ETIn.已过时间指示器ETabbr.东部时间（=Eastern Time)abbr.外星人（=extraterrestrial）ethyl arsenite亚砷酸乙酯ethyl gasoline乙基汽油Ethenvlamidine乙眯ethenylbenzene苯乙烯etybenztropine乙苄托品(抗胆碱药, 解痉药)ethyl rhodinol乙基玫瑰醇ethyl geranate香叶酸乙酯ethyl formiate[化] 甲酸乙酯ethyl decylate癸酸乙酯ethmoidal cell筛窦小房, 筛窦