*Vertices 3
1 "中国公共卫生" 0.0 0.0 0.0 x_fact 18.250000 y_fact 59.000000
2 "中华劳动卫生职业病杂志" 0.0 0.0 0.0 x_fact 5.500000 y_fact 22.750000
3 "中华预防医学杂志" 0.0 0.0 0.0 x_fact 6.500000 y_fact 18.250000
*Matrix 
0.000000 0.297935 0.515740 
0.297935 0.000000 0.498762 
0.515740 0.498762 0.000000