*Vertices 4
1 "机械工程学报" 0.0 0.0 0.0 x_fact 6.945681 y_fact 21.994657
2 "中国机械工程" 0.0 0.0 0.0 x_fact 4.986643 y_fact 19.501336
3 "计算机辅助设计与图形学学报" 0.0 0.0 0.0 x_fact 4.808549 y_fact 33.926981
4 "计算机集成制造系统-CIMS" 0.0 0.0 0.0 x_fact 9.617097 y_fact 24.577026
*Matrix 
0.000000 0.391254 0.000000 0.360058 
0.391254 0.000000 0.000000 0.386314 
0.000000 0.000000 0.000000 0.250255 
0.360058 0.386314 0.250255 0.000000