%0 Dataset %T Observation data of gravity earth tide at Zhongshan Station during the 7th Antarctic expedition of China, 1990-1991 %J National Cryosphere Desert Data Center %I National Cryosphere Desert Data Center(www.ncdc.ac.cn) %U http://www.ncdc.ac.cn/portal/metadata/75c0e3ce-3151-4d94-b26e-1711ff7e4f1f %W NCDC %R 10.12072/ncdc.azs.db3637.2023 %A LvChuncao %K Polar %X