*Vertices 4
1 "机械设计" 0.0 0.0 0.0 x_fact 9.234234 y_fact 16.103604
2 "机械科学与技术" 0.0 0.0 0.0 x_fact 11.824324 y_fact 20.495495
3 "机械工程学报" 0.0 0.0 0.0 x_fact 13.626126 y_fact 29.842342
4 "中国机械工程" 0.0 0.0 0.0 x_fact 11.936937 y_fact 33.558559
*Matrix 
0.000000 0.786083 0.567551 0.614215 
0.786083 0.000000 0.581801 0.587599 
0.567551 0.581801 0.000000 0.797909 
0.614215 0.587599 0.797909 0.000000