*Vertices 3
1 "环境化学" 0.0 0.0 0.0 x_fact 6.962025 y_fact 21.518987
2 "中国环境科学" 0.0 0.0 0.0 x_fact 10.759494 y_fact 25.738397
3 "环境科学学报" 0.0 0.0 0.0 x_fact 17.721519 y_fact 52.742616
*Matrix 
0.000000 0.461284 0.450573 
0.461284 0.000000 0.718715 
0.450573 0.718715 0.000000