*Vertices 8
1 "石油物探" 0.0 0.0 0.0 x_fact 3.195876 y_fact 13.470790
2 "石油与天然气地质" 0.0 0.0 0.0 x_fact 4.639175 y_fact 20.206186
3 "石油钻采工艺" 0.0 0.0 0.0 x_fact 1.752577 y_fact 4.329897
4 "中国海上油气" 0.0 0.0 0.0 x_fact 2.817869 y_fact 3.195876
5 "石油地球物理勘探" 0.0 0.0 0.0 x_fact 2.336770 y_fact 6.941581
6 "钻井液与完井液" 0.0 0.0 0.0 x_fact 0.824742 y_fact 4.295533
7 "石油学报" 0.0 0.0 0.0 x_fact 3.986254 y_fact 15.223368
8 "石油勘探与开发" 0.0 0.0 0.0 x_fact 3.436426 y_fact 32.336770
*Matrix 
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