请教,物理学中代表负电荷的符号在word中怎样输入呢,就是一个圆圈中间加一个负号的,在word符号插入里好像没有啊,请各位大侠不吝赐教!
请教,物理学中代表负电荷的符号在word中怎样输入呢,就是一个圆圈中间加一个负号的,在word符号插入里好像没有啊,请各位大侠不吝赐教!
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