*Vertices 2
1 "北京医学" 0.0 0.0 0.0 x_fact 13.414634 y_fact 18.902439
2 "中华妇产科杂志" 0.0 0.0 0.0 x_fact 0.000000 y_fact 81.097561
*Matrix 
0.000000 0.925547 
0.925547 0.000000