*Vertices 4
1 "炼油技术与工程" 0.0 0.0 0.0 x_fact 8.384458 y_fact 18.609407
2 "石油化工" 0.0 0.0 0.0 x_fact 14.928425 y_fact 49.284254
3 "石油炼制与化工" 0.0 0.0 0.0 x_fact 6.134969 y_fact 21.472393
4 "石化技术与应用" 0.0 0.0 0.0 x_fact 10.429448 y_fact 10.633947
*Matrix 
0.000000 0.337451 0.737939 0.906540 
0.337451 0.000000 0.455110 0.649359 
0.737939 0.455110 0.000000 0.882900 
0.906540 0.649359 0.882900 0.000000