*Vertices 3
1 "华西口腔医学杂志" 0.0 0.0 0.0 x_fact 13.134328 y_fact 34.626866
2 "中华口腔医学杂志" 0.0 0.0 0.0 x_fact 5.671642 y_fact 26.567164
3 "现代口腔医学杂志" 0.0 0.0 0.0 x_fact 23.880597 y_fact 38.805970
*Matrix 
0.000000 0.563274 0.676433 
0.563274 0.000000 0.803955 
0.676433 0.803955 0.000000