*Vertices 3
1 "中国中药杂志" 0.0 0.0 0.0 x_fact 7.915567 y_fact 40.369393
2 "天然产物研究与开发" 0.0 0.0 0.0 x_fact 1.846966 y_fact 5.672823
3 "食品科学" 0.0 0.0 0.0 x_fact 2.770449 y_fact 53.957784
*Matrix 
0.000000 0.372027 0.000000 
0.372027 0.000000 0.273804 
0.000000 0.273804 0.000000