ATRP原子转移自由基聚合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)ater quality standard水质标准Athyrium subrigescensn.姬蹄盖蕨attenuation equalizer衰减补偿器,衰减均衡器,衰减均衡器衰减补偿器Attenuation structure层析成像at the public expenseadv.公费attributive adjective属性形容词, 修饰性形容词atrial systole period心房收缩期atresia antis externa外耳道闭锁atlanto-axial joint寰枢关节atrophic Lung disease肺痿