jgg     2007 27 (专刊):  96-97    ISSN: 0412-1961  CN: 21-1139/TG AN INDOOR VERIFICATION EQUIPMENT FOR DIGITAL LEVELER Lu Jie 1,2) ;Fu Huiqing 1,2) ;Ou Tonggeng 1,2) ; and Zheng Yong 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