*Vertices 4
1 "催化学报" 0.0 0.0 0.0 x_fact 1.652893 y_fact 55.371901
2 "炼油技术与工程" 0.0 0.0 0.0 x_fact 6.446281 y_fact 13.057851
3 "石油炼制与化工" 0.0 0.0 0.0 x_fact 7.603306 y_fact 26.942149
4 "化学工程" 0.0 0.0 0.0 x_fact 0.330579 y_fact 4.628099
*Matrix 
0.000000 0.000000 0.000000 0.000000 
0.000000 0.000000 0.737338 0.000000 
0.000000 0.737338 0.000000 0.000000 
0.000000 0.000000 0.000000 0.000000