College of Earth Science and Engineering Shandong University of Science and Technology Qingdao 266590 China;
Network and Information Center Shandong University of Science and Technology Qingdao 266590 China;
BGP CNPC Zhuozhou 072751 China;
College of Earth Science and Engineering Shandong University of Science and Technology Qingdao 266590 China;
College of Earth Science and Engineering Shandong University of Science and Technology Qingdao 266590 China;
BGP CNPC Zhuozhou 072751 China;