ageingn.老化动词age的现在分词形式.=aging（美）.ageing cellar陈酿酒库,陈酿酒窖ageing vessel老化器ageing change年龄变化ageing period成熟期ageing effect老化效应,时效作用ageing mixture困料ageing process老化过程ageing of dams大坝老化ageing chamber老成箱ageing failure老化失效