Department;
of;
Physics,;
Beijing;
Institute;
of;
Technology,;
Beijing;
100081,;
China;
Beijing;
National;
Laboratory;
for;
Condensed;
Matter;
Physics,;
Institute;
of;
Physics,Chinese;
Academy;
of;
Sciences,;
Beijing;
100190,;
China;
应力传递; 颗粒大小; 颗粒直径; 垂直应力; 压力波动; 大规模系统; 颗粒材料; 实验观察;