*Vertices 3
1 "铁道学报" 0.0 0.0 0.0 x_fact 0.636943 y_fact 42.675159
2 "机车电传动" 0.0 0.0 0.0 x_fact 10.191083 y_fact 36.305732
3 "内燃机车" 0.0 0.0 0.0 x_fact 5.095541 y_fact 21.019108
*Matrix 
0.000000 0.249142 0.000000 
0.249142 0.000000 0.351836 
0.000000 0.351836 0.000000