*Vertices 5
1 "催化学报" 0.0 0.0 0.0 x_fact 6.769231 y_fact 40.102564
2 "石油学报石油加工" 0.0 0.0 0.0 x_fact 5.538462 y_fact 10.358974
3 "石油化工" 0.0 0.0 0.0 x_fact 8.102564 y_fact 20.102564
4 "石油炼制与化工" 0.0 0.0 0.0 x_fact 6.051282 y_fact 18.051282
5 "油田化学" 0.0 0.0 0.0 x_fact 0.102564 y_fact 11.384615
*Matrix 
0.000000 0.344113 0.420532 0.000000 0.000000 
0.344113 0.000000 0.410985 0.459233 0.259723 
0.420532 0.410985 0.000000 0.444369 0.000000 
0.000000 0.459233 0.444369 0.000000 0.000000 
0.000000 0.259723 0.000000 0.000000 0.000000