利用了同一种材料的裂纹信号AE参数具有统计特性的特点，提出了基于信号上升时间（rise time）和峰值频率（peak frequency）滤波提取裂纹信号（参数滤波）的方法，并对滤波后的信号进行分析和论证。
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If the center frequency of optical pulse deviates from the gain peak frequency in different directions,the deformation law of pulse is different.
若光脉冲中心频率沿不同的方向偏离介质增益峰值频率,脉冲变形规律不同。
参考来源 - 频率失谐对掺镱光纤放大器中光脉冲传输特性的影响·2,447,543篇论文数据，部分数据来源于NoteExpress
前缘锯齿对边界层不稳定噪声峰值频率没有影响。
The leading-edge serrations have no effect on the instability noise peak frequency.
算例表明，振动响应的能量集中分布在波浪载荷的峰值频率处。
The example shows that the energy of vibration respondence is mainly distributed over the peak frequency of the wave force.
发现大白鼠的HRV和RDV的谱分析的峰值频率都受到吸呼频率的调制。
The HRV and RDV spectral analysis showed that HF peak was modulated by the frequency of controlled respiration.
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