In fact, however, the N-pole side and the S-pole side are excited through the same field winding, which means that this model shows MMF that is only half the actual value.
事实上,N极边和s极边由相同的励磁绕组励磁,这意味着模型中的磁动势只是实际磁动势的一半。
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ZetaTalk Explanation9/30/2009: Any plot of a magnetosphere will show output from the NPole, regardless of what activity might be ongoing at the S Pole.