ETIn.已过时间指示器ETabbr.东部时间（=Eastern Time)abbr.外星人（=extraterrestrial）ethyl urethane氨基甲酸乙酯ethyl hexylate已酸乙酯ethyl stearate硬脂酸乙酯ethmophlogosis[医] 蜂窝织炎ethyl pinonate蒎酮酸乙酯ethyl silicate硅酸乙酯ethylacetylene乙基乙炔Ethemet switch以太网交换机ethmoid cornua[医] 中鼻甲ethoate methyl益果