jgg     2013 33 (1):  153-156    ISSN: 0412-1961  CN: 21-1139/TG RESEARCH ON IN-SITU CALIBRATION TECHNIQUE OF RZB BOREHOLE STRAINMETERS Ouyang Zuxi Institute of Crustal Dynamics, CEA, Beijing 100085 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null