从地震活动等待时间的角度出发，分析了地震活动次数百分比与等待时间的关系，最后简略地介绍了地震活动次数百分比等值线图的一些特征。
From the view of waiting time in seismic activity , we analyzed the relation between percentage of seismic activity number and waiting time . At last , we introduced the characteristics in the isoclines of the percentage .
百分比线