jgg     2011 31 (4):  52-55    ISSN: 0412-1961  CN: 21-1139/TG LATEST ABSOLUTE GRAVITY MEASUREMENT AT SOME POINTSOF 2000 NATIONAL BASIC GRAVITY NETWORK Zhang Hongwei 1) ;Dong Chaoyang 1) ;Zhao Dongming 2) ;Xiao Fan 1) ;Li Jianguo 1) ; and Ji Lidong 1) 1)61365 Troops，Tianjin 300140;2Surveying and Mapping Institute of Information Engineering University, Zhengzhou 450052 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null