| 释义 |
老化lǎohuà
1.橡胶、塑料等高分子化合物,在光、热、空气、机械力等的作用下,变得黏软或硬脆。{ageing, referring to rubber, plastics, or any other macromolecular compound becoming sticky and soft, or hard and brittle from exposure to light, heat, air, and mechanical force}
2.指在一定范围内老年人的比重增长{(of population) ageing; becoming old}:
人口～{ageing population}|领导班子～。{leading members of an institution getting too old}
3.知识等变得陈旧过时{(of knowledge, etc.) become outdated}:
知识～。{outdated knowledge} |