The results show that the geomagnetic data used are precise and reliable, and the selection of the truncation order is reasonable.
结果表明，所使用的地磁观测资料是准确可靠的，模型截断阶数的选取是合理的。
The results show that the geomagnetic data used are precise and reliable, and the selection of the truncation order is reasonable.
结果表明，所使用的地磁观测资料是准确可靠的，模型截断阶数的选取是合理的。
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