*Vertices 4
1 "石油与天然气地质" 0.0 0.0 0.0 x_fact 4.224240 y_fact 22.108172
2 "天然气工业" 0.0 0.0 0.0 x_fact 6.829846 y_fact 28.108962
3 "石油勘探与开发" 0.0 0.0 0.0 x_fact 8.961705 y_fact 42.163443
4 "天然气地球科学" 0.0 0.0 0.0 x_fact 1.223845 y_fact 7.619424
*Matrix 
0.000000 0.000000 0.000000 0.212779 
0.000000 0.000000 0.000000 0.211202 
0.000000 0.000000 0.000000 0.000000 
0.212779 0.211202 0.000000 0.000000