*Vertices 5
1 "机械设计" 0.0 0.0 0.0 x_fact 11.296660 y_fact 17.190570
2 "机械科学与技术" 0.0 0.0 0.0 x_fact 13.850688 y_fact 22.986248
3 "机械工程学报" 0.0 0.0 0.0 x_fact 8.742633 y_fact 25.343811
4 "机械设计与研究" 0.0 0.0 0.0 x_fact 8.251473 y_fact 11.100196
5 "中国机械工程" 0.0 0.0 0.0 x_fact 7.367387 y_fact 23.379175
*Matrix 
0.000000 0.784778 0.511010 0.897162 0.598730 
0.784778 0.000000 0.580584 0.791523 0.681864 
0.511010 0.580584 0.000000 0.587838 0.398608 
0.897162 0.791523 0.587838 0.000000 0.666459 
0.598730 0.681864 0.398608 0.666459 0.000000