等效速度 meaning in English

velocity equivalent

All records are classified into three site conditions . for the two components of a record , two energy equivalent spectra are calculated , and the geometric mean of the two spectra are adopted to analysis by two - stage regression method using an attenuation model . then the attenuation law is attained
对每一条记录，取了两个分量所计算的能量谱的几何平均值，选择了衰减模型，利用两步回归法，对这些能量等效速度谱做了统计拟合分析，得出了地震动四种能量反应谱随震级、距离等参数的衰减规律。