*Vertices 4
1 "工业卫生与职业病" 0.0 0.0 0.0 x_fact 15.230461 y_fact 22.845691
2 "中华劳动卫生职业病杂志" 0.0 0.0 0.0 x_fact 10.220441 y_fact 26.853707
3 "中国工业医学杂志" 0.0 0.0 0.0 x_fact 14.428858 y_fact 24.448898
4 "中国职业医学" 0.0 0.0 0.0 x_fact 19.038076 y_fact 25.851703
*Matrix 
0.000000 0.908603 0.833226 0.897100 
0.908603 0.000000 0.792687 0.847093 
0.833226 0.792687 0.000000 0.902181 
0.897100 0.847093 0.902181 0.000000