*Vertices 3
1 "分析化学" 0.0 0.0 0.0 x_fact 9.098568 y_fact 23.504634
2 "高等学校化学学报" 0.0 0.0 0.0 x_fact 3.032856 y_fact 74.557709
3 "环境科学与技术" 0.0 0.0 0.0 x_fact 0.589722 y_fact 1.937658
*Matrix 
0.000000 0.316059 0.515016 
0.316059 0.000000 0.245988 
0.515016 0.245988 0.000000