*Vertices 5
1 "石油钻采工艺" 0.0 0.0 0.0 x_fact 3.038427 y_fact 9.472744
2 "石油机械" 0.0 0.0 0.0 x_fact 3.842717 y_fact 15.102770
3 "石油学报" 0.0 0.0 0.0 x_fact 3.306524 y_fact 21.268990
4 "天然气工业" 0.0 0.0 0.0 x_fact 10.098302 y_fact 39.142091
5 "石油矿场机械" 0.0 0.0 0.0 x_fact 10.366399 y_fact 15.013405
*Matrix 
0.000000 0.257444 0.234973 0.219233 0.291563 
0.257444 0.000000 0.000000 0.000000 0.927210 
0.234973 0.000000 0.000000 0.237531 0.000000 
0.219233 0.000000 0.237531 0.000000 0.000000 
0.291563 0.927210 0.000000 0.000000 0.000000