The seismic gap, belt distribution and frequency variation before this event are discussed in this paper, serving as a useful means of monitoring future activities in the area.本文讨论了这次地震前的地震活动空区、条带分布和频度变化,这对监视该区今后的地震活动是为助益的;
【读音发音】英 [ˈsaɪzmɪk ɡæp] 美 [ˈsaɪzmɪk ɡæp]
【中文意思】地震活动空白地带