老化率 meaning in English

ageing rate
aging rate

Population ratio of those aged 65 or older to total population
注释人口老化率超过65岁的人口总人口x 100
Under different load , when we apply this software to any time , region and cooling way , we can get the hottest spot increment and aging rating . to manufactory , the software means sounder thermal design , which will meet the load , putted forward by user , while to user , the software equal to a master who can help them decide the capacity rating of the transformer , which will fit the load . by using the software , the potential danger and the waste , caused by unfit load choice may be avoided
研究开发了计算干式电力变压器负载能力的计算软件，可对于各种绝缘结构，各种冷却方式和任一地区、任一时间下运行的变压器在不同运行载荷下的最热点温升绝缘老化率进行分析和计算，同时利用该软件制造厂可以依据用户提出的运行负载量给出相应的热设计方案，用户可根据运行负载情况利用软件计算所需变压器的额定容量，避免额定容量选择不当造成隐患和浪费。