*Vertices 4
1 "华西口腔医学杂志" 0.0 0.0 0.0 x_fact 9.365079 y_fact 23.650794
2 "中华口腔医学杂志" 0.0 0.0 0.0 x_fact 7.777778 y_fact 18.253968
3 "实用口腔医学杂志" 0.0 0.0 0.0 x_fact 12.698413 y_fact 29.206349
4 "现代口腔医学杂志" 0.0 0.0 0.0 x_fact 21.904762 y_fact 28.888889
*Matrix 
0.000000 0.702143 0.461176 0.680485 
0.702143 0.000000 0.537105 0.919972 
0.461176 0.537105 0.000000 0.705844 
0.680485 0.919972 0.705844 0.000000