Atka单鳍多线鱼
atprep.在;向;达n.基普(老挝货币基本单位)(=att);[化]砹(极不稳定放射性元素)abbr.密封的(=airtight)abbr.气温(=air temperature)
at a snail's gallop关节橡胶接头,关节橡皮垫
at the owner's risk囊花马兜铃
at sb.'s disposal任意加劲板
Atrial spetal defct房间隔缺损
at-once-payment立即付款
attenuation network衰减网络,衰耗器
at terrible expense巨大的牺牲
atrophic excavation[医] 萎缩性陷凹
Athyrium ruilicolumn.瑞丽蹄盖蕨