Global Geology     2012 15 (3):  241-244    ISSN: 1673-9736:  CN: 22-1371/P Design of a new bionic diamond bit and its experimental study YANG Fang，SUN Youhong，BAI Fengtian and WANG Qiuwen College of Construction Engineering，Jilin University，Changchun 130026，China Received null  Revised null  Online 2012-09-25 Reference   Corresponding author: