*Vertices 7
1 "大庆石油学院学报" 0.0 0.0 0.0 x_fact 4.545455 y_fact 7.765152
2 "石油钻采工艺" 0.0 0.0 0.0 x_fact 2.935606 y_fact 6.344697
3 "石油机械" 0.0 0.0 0.0 x_fact 1.136364 y_fact 7.102273
4 "石油学报" 0.0 0.0 0.0 x_fact 3.977273 y_fact 13.494318
5 "石油勘探与开发" 0.0 0.0 0.0 x_fact 7.102273 y_fact 37.878788
6 "油田化学" 0.0 0.0 0.0 x_fact 0.946970 y_fact 6.155303
7 "大庆石油地质与开发" 0.0 0.0 0.0 x_fact 3.503788 y_fact 21.259470
*Matrix 
0.000000 0.351516 0.000000 0.379314 0.251134 0.201315 0.293372 
0.351516 0.000000 0.238802 0.246101 0.000000 0.388583 0.000000 
0.000000 0.238802 0.000000 0.000000 0.000000 0.000000 0.000000 
0.379314 0.246101 0.000000 0.000000 0.379417 0.000000 0.000000 
0.251134 0.000000 0.000000 0.379417 0.000000 0.000000 0.000000 
0.201315 0.388583 0.000000 0.000000 0.000000 0.000000 0.000000 
0.293372 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000