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地震
西北地区东部强震前地震活动演化特征
任雪梅, 马禾青, 赵卫明, 康凌燕, 延海军
The evolutional features of seismic activity before strong earthquakes ineastern part of Northwest China region
REN Xue-mei, MA He-qing, ZHAO Wei-ming, KANG Ling-yan, YAN Hai-jun
地震 . 2002, (3): 45 -50 .