一个轴对称磁铁(例如圆柱棒)会产生轴对称的磁场,能否用磁场判断这个磁体是否在整体旋转? 知乎 Template




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tomski一个轴对称磁铁(例如圆柱棒)会产生轴对称的磁场,能否用磁场判断这个磁体是否在整体旋转? 知乎 coloring