At last, we recomposed some frequency band of wavelets, and the results can efficiently extract the features of acoustic emission signal.

最后通过对能反映源特征的频带信号进行重构，这样能更好更有效的提取声发射信号的本质特征。

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Spontaneous emission can be totally suppressed or strongly enhanced depending on the relative position of the resonant frequency from the edge of the photonic band gap and the photonic mode density.

通过原子上能级与光子频率带隙边缘的相对位置或者光子态密度，可以抑制或增强原子的自发辐射。

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