*Vertices 7
1 "西南石油学院学报" 0.0 0.0 0.0 x_fact 2.997003 y_fact 4.195804
2 "石油钻采工艺" 0.0 0.0 0.0 x_fact 5.544456 y_fact 9.290709
3 "钻井液与完井液" 0.0 0.0 0.0 x_fact 3.546454 y_fact 8.591409
4 "石油钻探技术" 0.0 0.0 0.0 x_fact 4.595405 y_fact 18.331668
5 "石油学报" 0.0 0.0 0.0 x_fact 3.596404 y_fact 19.930070
6 "天然气工业" 0.0 0.0 0.0 x_fact 7.442557 y_fact 34.365634
7 "油田化学" 0.0 0.0 0.0 x_fact 2.297702 y_fact 5.294705
*Matrix 
0.000000 0.438212 0.249407 0.000000 0.579159 0.609073 0.431735 
0.438212 0.000000 0.394929 0.559801 0.283855 0.244373 0.380922 
0.249407 0.394929 0.000000 0.278978 0.000000 0.000000 0.440923 
0.000000 0.559801 0.278978 0.000000 0.000000 0.000000 0.000000 
0.579159 0.283855 0.000000 0.000000 0.000000 0.000000 0.217791 
0.609073 0.244373 0.000000 0.000000 0.000000 0.000000 0.000000 
0.431735 0.380922 0.440923 0.000000 0.217791 0.000000 0.000000