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河南及邻区5级以上地震前中等地震活动增强特征*
谢智, 刘尧兴, 谢健健, 王文旭, 胡卫建, 马俊林
Characteristics of the enhancement of activity of moderate earthquakes before M≥5 earthquakes in Henan Province and its adjacent areas
XIE Zhi, LIU Yao-xing, XIE Jian-jian, WANG Wen-xue, HU Wei-jian, MA Jun-lin
地震 . 2001, (2): 70 -74 .