Department of Geophysics, Chcngdu University of Technology, Chengdu 610059, China;
Department of Geophysics, Chcngdu University of Technology, Chengdu 610059, China;
Department of Geophysics, Chcngdu University of Technology, Chengdu 610059, China;
seismic body wave tomography; East Asia mantle flow; vertical velocity of flow; tangential velocity of flow;