*Vertices 4
1 "工业卫生与职业病" 0.0 0.0 0.0 x_fact 18.421053 y_fact 27.511962
2 "中华劳动卫生职业病杂志" 0.0 0.0 0.0 x_fact 13.397129 y_fact 33.253589
3 "中华预防医学杂志" 0.0 0.0 0.0 x_fact 2.631579 y_fact 11.004785
4 "中国工业医学杂志" 0.0 0.0 0.0 x_fact 16.267943 y_fact 28.229665
*Matrix 
0.000000 0.910339 0.382994 0.831838 
0.910339 0.000000 0.393078 0.794117 
0.382994 0.393078 0.000000 0.304302 
0.831838 0.794117 0.304302 0.000000