“geomagnetic field model”的概念、定义、翻译、参考文献-科学参考

单词	geomagnetic field model
释义	geomagnetic field model Encyclopedia 工学地磁导航系统释 geomagnetic field model地磁场模型描述位置（地理经度、纬度、海拔高度）和时间的函数，表示地球主磁场的长期变化和磁异常时空分布规律的数学表达式。对地球磁场的一种近似描述。
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