*Vertices 7
1 "地学前缘" 0.0 0.0 0.0 x_fact 1.124297 y_fact 4.871955
2 "石油与天然气地质" 0.0 0.0 0.0 x_fact 7.276702 y_fact 25.109307
3 "中国海上油气" 0.0 0.0 0.0 x_fact 1.467833 y_fact 2.966896
4 "石油学报" 0.0 0.0 0.0 x_fact 3.185509 y_fact 9.462836
5 "天然气工业" 0.0 0.0 0.0 x_fact 5.527795 y_fact 15.677701
6 "石油勘探与开发" 0.0 0.0 0.0 x_fact 7.307933 y_fact 27.607745
7 "大庆石油地质与开发" 0.0 0.0 0.0 x_fact 2.592130 y_fact 14.303560
*Matrix 
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0.000000 0.000000 0.000000 0.358895 0.275435 0.231230 0.000000 
0.000000 0.260700 0.358895 0.000000 0.268815 0.386248 0.000000 
0.000000 0.000000 0.275435 0.268815 0.000000 0.237183 0.000000 
0.000000 0.231238 0.231230 0.386248 0.237183 0.000000 0.000000 
0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000