本文中将倍频晶体分割成无数多个小倍频单元，并导出每个倍频单元中的谐波功率与倍频效率。

In this paper, we divided the double frequency crystal into numerous small double frequency units and derived the harmonic power and the double frequency efficiency in each unit.

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本文讨论了晶体单色器高次衍射形成的谐波对EXAFS振幅的影响。

The effect on amplitude of EXAFS from harmonic caused by high order diffraction of crystal monochromator is discussed.

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晶体遵循谐波频率，可用于与仪器，看起来像音叉。

Crystals follow harmonic frequencies and could be used with an instrument that looks like a tuning fork.

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