*Vertices 4
1 "中国环境科学" 0.0 0.0 0.0 x_fact 11.282660 y_fact 19.714964
2 "环境科学研究" 0.0 0.0 0.0 x_fact 8.907363 y_fact 14.133017
3 "环境科学学报" 0.0 0.0 0.0 x_fact 21.733967 y_fact 41.448931
4 "环境科学" 0.0 0.0 0.0 x_fact 11.638955 y_fact 24.703088
*Matrix 
0.000000 0.802438 0.780273 0.805391 
0.802438 0.000000 0.722898 0.750955 
0.780273 0.722898 0.000000 0.750774 
0.805391 0.750955 0.750774 0.000000