*Vertices 3
1 "声学学报" 0.0 0.0 0.0 x_fact 0.759494 y_fact 56.962025
2 "西北工业大学学报" 0.0 0.0 0.0 x_fact 6.075949 y_fact 11.898734
3 "推进技术" 0.0 0.0 0.0 x_fact 0.253165 y_fact 31.139241
*Matrix 
0.000000 0.430661 0.000000 
0.430661 0.000000 0.426408 
0.000000 0.426408 0.000000