*Vertices 2
1 "中华劳动卫生职业病杂志" 0.0 0.0 0.0 x_fact 1.587302 y_fact 74.603175
2 "毒理学杂志" 0.0 0.0 0.0 x_fact 17.460317 y_fact 25.396825
*Matrix 
0.000000 0.919145 
0.919145 0.000000