*Vertices 4
1 "环境化学" 0.0 0.0 0.0 x_fact 7.205240 y_fact 9.825328
2 "中国环境科学" 0.0 0.0 0.0 x_fact 14.410480 y_fact 24.235808
3 "环境科学学报" 0.0 0.0 0.0 x_fact 14.192140 y_fact 25.982533
4 "环境科学" 0.0 0.0 0.0 x_fact 20.960699 y_fact 39.956332
*Matrix 
0.000000 0.869426 0.841301 0.933653 
0.869426 0.000000 0.818757 0.820689 
0.841301 0.818757 0.000000 0.784642 
0.933653 0.820689 0.784642 0.000000