natural period of soil site
地基固有周期
earthquake, seism, temblor
地震
duration of earthquake
地震持续时间
equivalent even shear stress of earthquake
地震等效均匀剪应力
earthquake response spectrum
地震反应谱
earthquake intensity
地震烈度
earthquake magnitude
地震震级
seismic predominant period
地震卓越周期
maximum acceleration of earthquake
地震最大加速度
dynamic magnification factor
动力放大因数
logrithmic decrement
对数递减率
coefficient of rigidity
刚性系数
absorption coefficient
吸收系数