insulation ageing rate

例句：

1. 1.The insulation ageing rate of the power cable is an important factor affecting its lifespan.
   电力电缆的绝缘老化率是影响其使用寿命的一个重要因素。
2. 2. The insulation ageing rate of the transformer is a key indicator for assessing its performance.
   变压器的绝缘老化率是评估其性能的关键指标。
3. 3. In order to improve the reliability of the power system, it is necessary to monitor the insulation ageing rate of the equipment.
   为了提高电力系统的稳定性，有必要监测设备绝缘老化率。