TY - Data T1 - Observation data of gravity earth tide at Zhongshan Station during the 7th Antarctic expedition of China, 1990-1991 A1 - LvChuncao DO - 10.12072/ncdc.azs.db3637.2023 PY - 2020 DA - 2020-12-24 PB - National Cryosphere Desert Data Center AB - DB - NCDC UR - http://www.ncdc.ac.cn/portal/metadata/75c0e3ce-3151-4d94-b26e-1711ff7e4f1f ER -