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地震
7级大震和中强震的前兆异常有本质区别吗?
韩渭宾, 任越霞
Are thereessential differences for precursory anomalies between strong earthquakes with M≥ 7 and moderate earthquakes?
HAN Wei-bin, REN Yue-xia
地震 . 2002, (2): 42 -46 .