AFRn.容许故障率AFabbr.空军(=air force)abbr.音频(=audio frequency)afetal pregnancy假妊娠affinal relative姻亲affiliation need交往需要,亲和需要AF hum pick-up音频交流声干扰affination yield洗炼得率affinitive drive亲和驱力aflagellar state无鞭毛期affiliative need亲和需求, 交接欲, 交往需要AFFF concentrate水成膜泡沫液afebrile typhoid[医] 无热伤寒