“温度波动”常见的英文表达是 temperature fluctuation 。
例句：
The temperature fluctuation in this area is relatively large during the transition seasons. （在这个地区，季节交替时温度波动比较大。）
We need to monitor and control the temperature fluctuation to ensure the quality of the product. （我们需要监测并控制温度波动，以确保产品质量。）