geomagnetic fields

• 地磁场

geomagnetic fields的用法和样例：

例句

1. The geomagnetic field varies continuously.
   地磁场不断地发生变化。
2. As magma rises under the mid-ocean ridge, ferromagnetic minerals in the magma become magnetized in the direction of the geomagnetic field.
   当岩浆从中海脊下涌起的时候，岩浆中的磁铁矿物质按地磁场的方向被磁化。