*Vertices 2
1 "卫生研究" 0.0 0.0 0.0 x_fact 9.649123 y_fact 72.807018
2 "卫生毒理学杂志" 0.0 0.0 0.0 x_fact 7.894737 y_fact 27.192982
*Matrix 
0.000000 0.514071 
0.514071 0.000000