jgg     2007 27 (专刊):  93-95    ISSN: 0412-1961  CN: 21-1139/TG ON PRERECEIVE CHANNEL OF HAND-HOLD LASER RANGEFINDER Xia Jiening Institute of Seismology, CEA, Wuhan 430071 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null