international geomagnetic reference field

例句：

1. 1.The international geomagnetic reference field is crucial for navigation and communication.
   国际地磁参考场对于导航和通信至关重要。
2. 2. The research on the international geomagnetic reference field has made significant progress in recent years.
   关于国际地磁参考场的研究近年来取得了显著进展。
3. 3.The international geomagnetic reference field is used to determine the location of magnetic poles.
   国际地磁参考场用于确定磁极的位置。