*Vertices 3
1 "机械工程材料" 0.0 0.0 0.0 x_fact 8.347245 y_fact 17.863105
2 "金属学报" 0.0 0.0 0.0 x_fact 1.168614 y_fact 23.205342
3 "摩擦学学报" 0.0 0.0 0.0 x_fact 2.337229 y_fact 58.931553
*Matrix 
0.000000 0.475063 0.339438 
0.475063 0.000000 0.000000 
0.339438 0.000000 0.000000