Computational accuracy of equivalent magnetic charge method is high, but its calculation is complicated.
等效磁荷法计算精度高，但计算过程相对复杂。
By using a concise method, the charge distribution on the surface of a thick spherical conducting shell revolving in a homogeneous magnetic field is obtained.
用简单方法求出了在均匀磁场中旋转的导体厚球壳上电荷的分布，证明了在磁场中转动的导体表面电荷分布无普遍公式。
By use of magnetic balance which is general physical experiment instrument, a simple and new method of measuring the charge-mass ratio of electron mass developed.
使用常用物理实验仪器磁天平，开发出用于近代物理实验测量电子荷质比的简易新方法。
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