1.No.3 Hydrology Engineering Geological Brigade of Hebei Bureau of Geology and Minreal Resources Exploration, Hengshui Hebei 053000, China;2.The Institute of Hydrogeology and Environmental Geology, CAGS, Shijiazhuang Hebei 050061, China;3.Institute of Exploration Techniques, CAGS, Langfang Hebei 065000, China
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