为什么我们找不到单独存在的南磁极或北磁极的磁极呢？

And Why can't we find an isolated magnetic north or South Pole?

youdao

为什么我们找不到单独存在的南磁极或北磁极的磁极呢？

And Why can't we find an isolated magnetic north or South Pole?

youdao