ACLUabbr.American Civil Liberties Union；美国公民自由协会ACabbr.(=alternating current)交流电abbr.(=actinium )元素锕abbr.(=air-conditioning )空气调节Acontia olivacean.斜带绮夜蛾acanthotylostyle大头多刺针AC blowing agent交流发泡剂Acropora horridan.丑鹿角珊瑚AC-DC receiver交直流两用接收机acrosomal enzyme顶体酶acromial process肩峰acience research科学研究Acronema hookerin.锡金丝瓣芹AC point machine交流电动转辙机