*Vertices 3
1 "卫生研究" 0.0 0.0 0.0 x_fact 2.243590 y_fact 28.525641
2 "中国食品卫生杂志" 0.0 0.0 0.0 x_fact 7.692308 y_fact 12.500000
3 "中国卫生检验杂志" 0.0 0.0 0.0 x_fact 10.256410 y_fact 58.974359
*Matrix 
0.000000 0.617196 0.000000 
0.617196 0.000000 0.606646 
0.000000 0.606646 0.000000