psychrometric difference

例句：

1. 1.The weather forecast indicated a significant increase in the psychrometric difference between day and night.
   天气预报显示，白天和夜晚的干球温度差显著增加。
2. 2.During the summer, the temperature difference between day and night can be quite large due to the influence of the sun.
   夏季，由于太阳的影响，白天和夜晚的温度差可以相当大。
3. 3. The psychrometric difference is an important factor in determining the optimal timing for planting crops.
   干球温度差是决定最佳种植时机的重要因素。