考虑台站因素，计算波速比的置信度最低达到95%。
The confidence is at least 95% on calculating velocity ratio when considering station factor.
以上两因素对波速比方法的预报效率影响甚大，值得人们重视。
These two factors, which affect the accuracy of the method of seismic velocity a great extent, must be paid our attention.
年以后波速比、孕震空区、地震迁移等可供分析的前兆信息很丰富。
There is abundant precursory information of VP/VS ratio, seismogenic gap and seismic migration after1993 for analysis.
平均波速比的可靠性有赖于较多的台站数目，以满足拟合精度的要求。
The reliability of average velocity ratios relies on the number of stations to satisfy the fitting precision.
无论是从较长的时间尺度还是从较大的空间范围来看，平均波速比值都是非常稳定的。
The average velocity ratios are very steady, whatever in the long time scale or large spatial scale.
目前九江—瑞昌地震序列的波速比持续处于高值异常，应当警惕回落到平均值以下后发生显著有感地震。
At present, the V_P/V_S ratio keeps in high value anomaly, we should be alert the occurrence of felt earthquakes when the mean value drop.
波速比随温度升高波动大，无规律可循，随频率升高明显下降。这些可作为地震或其他疲劳损伤的前兆。
There exists a large variation of velocity with temperature and frequency, which can be applied as the omens of earthquake or fatigue damage.
本文分析了1976年春季山东庙岛群岛的两次小震群的活动特征，给出了部分小震震源参数、波速比、（?）
In this paper the characteristics of two small earthquake swarms at Miaodao Archipelago, Shandong in Spring 1976, have been analysed.
文中进一步通过算例分析，探讨了P、SV波的入射角度、土层厚度以及基岩和土层间的剪切波速比等因素对土层随机地震反应的影响。
The effects of incident angle of wave and elastic rock on the seismic responses of layered soil sites are considered precisely and conveniently. The influences of angle of incidence of P-and SV-…
文中进一步通过算例分析，探讨了P、SV波的入射角度、土层厚度以及基岩和土层间的剪切波速比等因素对土层随机地震反应的影响。
The effects of incident angle of wave and elastic rock on the seismic responses of layered soil sites are considered precisely and conveniently. The influences of angle of incidence of P-and SV-…
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