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电磁感应现象
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磁场复习
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磁性材料
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磁场对运动电荷的作用
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磁场对通电导线的作用
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电流的磁场
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指南针与远洋航海
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电流的热效应
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电流和电源
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电容器
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生活中的静电现象
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电场
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电荷 库仑定律
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问题解决课
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曲线轨迹方程的求法 -3
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曲线轨迹方程的求法 -2
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曲线轨迹方程的求法 -1
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微课3：割圆术
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微课2：数学家刘徽
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微课1：《九章算术》
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