Southwestern Institute of Physics;
Chengdu 610041;
People's Republic of China;
School of Physics;
University of Science and Technology of China;
Hefei 230026;
People's Republic of China;
Institute of Fusion Science;
School of Physical Science and Technology;
Southwest Jiaotong University;
Chengdu 610031;
People's Republic of China;
SOL width; edge turbulent transport; E×B shear; turbulence spreading;