地球磁场由国际地磁参考场和磁力异常场叠合建立。

Earth's magnetic field is composition of International Geomagnetic Reference field and magnetic anomaly field.

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地球磁场由国际地磁参考场和磁力异常场叠合建立。

Earth's magnetic field is composition of International Geomagnetic Reference field and magnetic anomaly field.

youdao