*Vertices 3
1 "生物医学工程学杂志" 0.0 0.0 0.0 x_fact 17.391304 y_fact 57.608696
2 "医用生物力学" 0.0 0.0 0.0 x_fact 11.956522 y_fact 24.456522
3 "中国生物医学工程学报" 0.0 0.0 0.0 x_fact 4.347826 y_fact 17.934783
*Matrix 
0.000000 0.506212 0.580675 
0.506212 0.000000 0.561503 
0.580675 0.561503 0.000000