*Vertices 4
1 "中国超声医学杂志" 0.0 0.0 0.0 x_fact 7.509025 y_fact 17.328520
2 "中国医学影像技术" 0.0 0.0 0.0 x_fact 8.303249 y_fact 52.490975
3 "中华超声影像学杂志" 0.0 0.0 0.0 x_fact 9.241877 y_fact 20.577617
4 "临床超声医学杂志" 0.0 0.0 0.0 x_fact 6.787004 y_fact 9.602888
*Matrix 
0.000000 0.303453 0.826781 0.859909 
0.303453 0.000000 0.284859 0.371386 
0.826781 0.284859 0.000000 0.669790 
0.859909 0.371386 0.669790 0.000000