Print Professor Dong Danan from East China Normal University (ECNU) visited NTSC at the invitation of researcher Yang Xuhai of NTSC on July 03. He conducted academic exchanges and gave an academic report entitled “The Nonlinear Variation of Geocenter Motions and Its Influence on the Origin of International Terrestrial Reference Frame”. Over 30 scientific and technical personnel and postgraduates, including researcher Zhang Shougang, the Vice Director of NTSC, researchers Li Zhigang and Gao Yuping, listened to the report and participated in the discussion.
