地震活动非均匀度<em>C</em><sub>V</sub>值在南北地震带强震前的中长期趋势异常特征

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曹志华

Long-and medium-term anomalous variation of C_V value before strong earthquakes along North-South Seismic Belt

CAO Zhi-hua

地震 . 2000, (2): 89 -93 .