4LI ZhengXin1,2 & LI Hui3 1 Shanghai Observatory,Chinese Academy of Sciences,Shanghai 200030,China,2 Institute of Geodesy and Geophysics,Chinese Academy of Sciences,Wuchang 430077,China,3 Institute of Seismology,China Earthquake Administration,Wuchang 430071,China.Plumb line variation at Tangshan during 1987―1998 and its relation with the earthquakes around[J].Science China Earth Sciences,2009,52(1):101-107. 被引量：3
