*Vertices 4
1 "生物医学工程学杂志" 0.0 0.0 0.0 x_fact 13.812155 y_fact 38.121547
2 "解剖学报" 0.0 0.0 0.0 x_fact 0.552486 y_fact 24.861878
3 "医用生物力学" 0.0 0.0 0.0 x_fact 14.364641 y_fact 20.441989
4 "中国生物医学工程学报" 0.0 0.0 0.0 x_fact 5.524862 y_fact 16.574586
*Matrix 
0.000000 0.000000 0.617974 0.820742 
0.000000 0.000000 0.316806 0.000000 
0.617974 0.316806 0.000000 0.770937 
0.820742 0.000000 0.770937 0.000000