Patients undergoing this treatment have a coil placed on their head which uses electromagnetic induction to activate weak electric currents via a changing magnetic field.
进行该项治疗的患者在头部置有一个线圈，这个线圈通过电磁感应在一个变化的磁场中激活弱电流。
Based on electromagnetic induction principle and result of magnetic field simulation, a model of induction coil launcher with control turn-on time is analyzed and designed.
基于电磁感应原理和仿真分析结果，设计和制作了感应线圈型电磁发射器模型。
The equation for electromagnetic properties of a moving medium is discussed by using electromagnetic field tensor, electromagnetic induction tensor and their dual tensor.
文章从麦克斯韦方程组出发，利用纵向场分量法，详细地推导了强引导磁场下等离子体波导中电磁场分量的表达式。
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