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地震
昌黎井水氡、水位、降雨之间的相关分析
张素欣, 郑云贞
CORRELATION ANALYSIS ON THE WATER RADON AND WATER LEVEL OF GROUND WATER IN CHANGLI WELL AND RAIN FALL
Zhang Suxin, Zheng Yunzhen
地震 . 1999, (3): 309 -312 .