...
机译:A Study of Blast Vibration Propagation Law under Negative Altitude Terrains
Yan’an Xing’an Blasting Engineering Service Co., Ltd Yan’an Shanxi 716000;
Mining College of Guizhou University Guiyang Guizhou 550025;
School of Mathematics and Statistics Guizhou University of Finance and Economics Guiyang Guizhou 550025College of Physics and Engineering Xingyi Normal University for Nationalities Xingyi Guizhou 562400;