The value of a magnetic material core varies according to the frequency of operation.
核心价值一磁性材料根据不同的操作频率。
Objective To explore field magnetic resonance imaging (MRI) diagnostic value of knee injury.
目的探讨膝关节外伤后低场磁共振成像（MRI）的诊断价值。
For both the shield material and the magnetic susceptibility, there are the best value ranges.
屏蔽材料的用材量和磁化率均存在最佳值范围。
As the current reaches its peak value, the magnetic field does also.
当电流达到其峰值，磁场的作用也。
As the current reaches its peak value, the magnetic field does also.
当电流达到其峰值，磁场的作用也。
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