meridian angle difference

例句：

1. 1.The meridian angle difference between the two cities is about 20 degrees.
   两座城市之间的子午线角度差大约是20度。
2. 2. The satellite's position was determined by measuring its meridian angle difference with respect to the sun.
   通过测量卫星相对于太阳的子午线角度差来确定其位置。
3. 3.Due to the large differences in the meridian angles, the stars appeared to be moving across the sky.
   由于子午线角度的差异，星星似乎在天空中移动。