TY - Journal of Yangtze River Scientific Research Institute A1 - MA Peng, Zhao-Guo-Ping, Zhang-Yong-Yong, Wu-Chun-Geng T1 - Preparation and Application of Ultrahigh Pressure Hydro-fracturing Geostress Measurement System in Rockmass Y1 - 2012-08-01 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 58 EP - 61 VL - 29 IS - 8 UR - http://ckyyb.crsri.cn N1 - 10.3969/j.issn.1001-5485.2012.08.011 ER -