利用国内外287次5级以上的实际地震记录，用峰值不对称比描述了加速度峰值不对称性的特征和规律，提出了其估计公式。
Using the records of 287 earthquakes above the magnitude 5 the feature of the asymmetry ratio of PGA is described and the its calculation formula.
地震模型一般是应用人工地面加速度时间历程存在集来丰富地震记录。
Seismological models are generally used to enrich the existent sets of earthquake records with artificial ground acceleration time histories.
对常规方法构造初始加速度时程的方法作了改进，并建议直接使用真实地震加速度时程记录作为初始时程。
The method making initial acceleration time history in the. Normal method has been improved, and it is recommended to use real earthquake acceleration records for initial time history.
对常规方法构造初始加速度时程的方法作了改进，并建议直接使用真实地震加速度时程记录作为初始时程。
The method making initial acceleration time history in the. Normal method has been improved, and it is recommended to use real earthquake acceleration records for initial time history.
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