本文导出了更精确的单晶铁磁共振公式，其近似度达到磁晶各向异性场的平方项。

More precise analytic expressions for ferromagnetic resonance of single crystals are calculated, the approximation being carried to terms quadratic in the magneto-crystalline anisotropy field.

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本文以区域分析理论为工具，提出分次谐波共振过电压的一个近似解析公式。

In this paper, a formula of approximate analytic solution of subharmonic resonant overvoltage is established according to the theory of region analysis.

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从严格数值结果与近似公式的对比发现，对共振滤波器的旁带反射率，可以用普通薄膜光学的反射率公式进行非常直观方便的讨论。

Comparing rigorous numerical result with approximate formulae, we find that the reflectance formula of general thin optics can easy straight calculate the side bands reflectance of resonance filter.

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