*Vertices 9
1 "中国石油大学学报" 0.0 0.0 0.0 x_fact 4.560874 y_fact 7.350170
2 "石油钻采工艺" 0.0 0.0 0.0 x_fact 4.070863 y_fact 6.784772
3 "钻井液与完井液" 0.0 0.0 0.0 x_fact 2.412363 y_fact 4.523181
4 "石油机械" 0.0 0.0 0.0 x_fact 1.281568 y_fact 6.030908
5 "石油钻探技术" 0.0 0.0 0.0 x_fact 2.223897 y_fact 7.463249
6 "石油学报" 0.0 0.0 0.0 x_fact 3.731625 y_fact 11.307953
7 "天然气工业" 0.0 0.0 0.0 x_fact 7.500942 y_fact 19.751225
8 "石油勘探与开发" 0.0 0.0 0.0 x_fact 6.671692 y_fact 31.172258
9 "油田化学" 0.0 0.0 0.0 x_fact 1.470034 y_fact 5.616283
*Matrix 
0.000000 0.411307 0.000000 0.216511 0.000000 0.492440 0.352037 0.379286 0.000000 
0.411307 0.000000 0.448906 0.237113 0.400534 0.246333 0.228805 0.000000 0.396626 
0.000000 0.448906 0.000000 0.000000 0.306876 0.000000 0.000000 0.000000 0.537882 
0.216511 0.237113 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 
0.000000 0.400534 0.306876 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 
0.492440 0.246333 0.000000 0.000000 0.000000 0.000000 0.266582 0.380599 0.000000 
0.352037 0.228805 0.000000 0.000000 0.000000 0.266582 0.000000 0.231527 0.000000 
0.379286 0.000000 0.000000 0.000000 0.000000 0.380599 0.231527 0.000000 0.000000 
0.000000 0.396626 0.537882 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000