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以低频交变磁场模拟地磁场,用可塑性高阻磁性材料作成磁性体模型,观测交变磁场激发下磁模型体产生的交变二次磁场。
The low-frequency alternating magnetic field is used to simulate the geomagnetic field. The high-resistance plastic material is used to make the magnetic model. The alternating magnetic field generated by the magnetic model excited by the alternating magnetic field is observed.