ageingn.老化动词age的现在分词形式.=aging(美).
ageing stage陈化阶段
ageing steel时效钢
ageing crack时效裂纹
ageing units旧机组
ageing error陈化误差
ageing prcess衰老过程
ageing issues老龄问题
ageing action老化作用
ageing tester老化试验器
Ageing sports老年人体育