第七代国际地磁参考场的检验与评价_stmopen 关键词】: 国际地磁参考场,确定模型,主磁场 [gap=1072]Keywords】: International Geomagnetic Reference Field,Definitive model,Main field model
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...】: 地磁场模型,主磁场,能量密度谱,长期变化 [gap=1297]Keywords】: geomagnetic reference field models,main magnetic field,energy density spectrum,secular variations ..
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主磁场和扫描场线圈固定在同一轭铁架上。
The main magnet and the scan magnet coils were fixed on an iron frame.
采取了二维有限元法模拟核磁共振成像（MRI）装置的主磁场。
The main magnetic field of Magnetic Resonace Imaging( MRI)device is simulated by using the finite element method.
为了提取地壳异常场，必须从观测资料中消除主磁场、磁层场，感应场和电离层场。
In order to get the crustal anomaly field, the main field, magnetospheric, ionospheric and induction fields from the Magsat data must be subtracted.
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