The result shows that the anomalous peak values of C1 often appear before great earthquakes.
结果表明，每当大震发生前，C_1值均出现异常峰值，异常时间一般不超过一年。
Peaking effects were found on the plot of internal friction vs strain amplitude or time when the resonant frequency of anomalous peak closed to the normal one.
当反常共振峰频率与正常共振峰靠近时，在内耗-振幅或内耗-时间图上呈现峰值效应。
With temperature reduced, while the intensity of J-peak, the zero phonon line increased, anomalous enhancement of the phonon sideband was observed.
随着温度下降零声子线J峰强度的增大，观察到声子伴带的异常加强。
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