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震源介质参数的连续监测及其在张北地震前的变化
张天中, 高阿甲, 黄蓉良, 刘庆芳
Continuous monitoring of focal medium parameters and their changed before Zhangbei earthquake
ZHANG Tian-zhong, GAO A-jia, HUANG Rong-liang, LIU Qing-fang
地震 . 2000, (z1): 154 -161 .