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研究了恒导磁合金的铁芯损耗谱Ｐ（ｆ），发现Ｐ（ｆ）只有分形结构讨论了感生各向异性能Ｋ_ｕ对分形维数Ｄ_ｆ的影响．
The iron core loss spectrum P (f) of constant permeability magnetic alloy was studied. It was found that only the fractal structure of P (f) discussed the influence of anisotropy energy K_u on the fractal dimension D_f.