ageingn.老化动词age的现在分词形式.=aging（美）.ageing of plastics塑料老化ageing temperature时效温度ageing-resistantn.抗老化剂adj.抗老化剂的ageing coefficient老化系数ageing instability老化不稳定性ageing of solution溶液陈化ageing of colloids胶体熟化ageing social risks老龄化社会风险ageing of a magnete[电] 磁老化ageing rural labors劳动力老龄化