*Vertices 3
1 "西安石油学院学报" 0.0 0.0 0.0 x_fact 2.298851 y_fact 7.662835
2 "石油机械" 0.0 0.0 0.0 x_fact 9.195402 y_fact 65.134100
3 "石油矿场机械" 0.0 0.0 0.0 x_fact 15.708812 y_fact 27.203065
*Matrix 
0.000000 0.000000 0.401048 
0.000000 0.000000 0.836721 
0.401048 0.836721 0.000000