Simple demonstration experiments simulating motor rotary field with theoretical teaching improve classroom instruction effect.
用简单的演示实验模拟交流电动机旋转磁场，配合理论教学，改善了课堂教学效果。
Simple demonstration experiments simulating motor rotary field with theoretical teaching improve classroom instruction effect.
用简单的演示实验模拟交流电动机旋转磁场，配合理论教学，改善了课堂教学效果。
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