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N: 0cm 0cm 0pt; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-outline-level: 2" class=MsoNormal>nt-kerning: 18.0pt; mso-bidi-font-weight: bold" lang=EN-US>n">High Precision Underground Water Tracing Test Technique and Its Applications: A Case Study in Maocun Karst System, namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />n">n">Guilin, Guangxi namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />