*Vertices 3
1 "中国危重病急救医学" 0.0 0.0 0.0 x_fact 4.085802 y_fact 48.212462
2 "中国急救医学" 0.0 0.0 0.0 x_fact 12.155260 y_fact 21.961185
3 "中华急诊医学杂志" 0.0 0.0 0.0 x_fact 2.247191 y_fact 29.826353
*Matrix 
0.000000 0.664442 0.000000 
0.664442 0.000000 0.336565 
0.000000 0.336565 0.000000