The main areas of strong earthquake activity for each seismiccycle show that active crustal-block moves differently in different seismiccycle.
各轮回强震活动都有各自活动的主体地区,反映了不同活跃期内地块的不同活动方式。
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This shows that the effective time interval of earthquake events is only about 1000 years, and the maximum cycle of seismic activity that we are allowed to infer does not exceed 500 years.
Under seismic ground shaking, the ability of the connection to dissipate energy will depend on the connection's capability to withstand low cycle fatigue.