Symmetry of electromagnetic field,magnetic charge and magnetic monopole: An example of symmetry analysis in teaching collage electrodynamics
YUAN Ming-yue, LI Tong, HUANG Xiao-yan, LIN Fang, ZHANG Zhi-you,
College Physics . 2020, (9): 66 -71 .  DOI: 10.16854 /j.cnki.1000-0712.190486