jgg     2007 27 (专刊):  156-158    ISSN: 0412-1961  CN: 21-1139/TG ANALYSIS ON STATION MAINTENACE AND MANAGEMENT OF EXTENSOMETER Yuan Qu 1,2) ; Zhang Hui 1,2) ; Huang Zhong 1,2) ; and Wang Hui 1,2) 1) Institute of Seismology，CEA，Wuhan 4300712) Crustal Movement Laboratory，Wuhan 430071 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null