*Vertices 8
1 "中国石油大学学报" 0.0 0.0 0.0 x_fact 3.576045 y_fact 7.582938
2 "石油钻采工艺" 0.0 0.0 0.0 x_fact 5.557949 y_fact 8.789315
3 "钻井液与完井液" 0.0 0.0 0.0 x_fact 2.800517 y_fact 7.152090
4 "石油机械" 0.0 0.0 0.0 x_fact 1.206377 y_fact 7.065920
5 "石油钻探技术" 0.0 0.0 0.0 x_fact 4.696252 y_fact 16.544593
6 "石油学报" 0.0 0.0 0.0 x_fact 4.179233 y_fact 18.267988
7 "天然气工业" 0.0 0.0 0.0 x_fact 6.850495 y_fact 30.073244
8 "油田化学" 0.0 0.0 0.0 x_fact 1.938819 y_fact 4.523912
*Matrix 
0.000000 0.392879 0.000000 0.000000 0.000000 0.431808 0.000000 0.229743 
0.392879 0.000000 0.385906 0.206437 0.559250 0.290728 0.245647 0.378350 
0.000000 0.385906 0.000000 0.000000 0.278727 0.000000 0.000000 0.437872 
0.000000 0.206437 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 
0.000000 0.559250 0.278727 0.000000 0.000000 0.000000 0.000000 0.000000 
0.431808 0.290728 0.000000 0.000000 0.000000 0.000000 0.000000 0.219480 
0.000000 0.245647 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 
0.229743 0.378350 0.437872 0.000000 0.000000 0.219480 0.000000 0.000000