*Vertices 4
1 "电子学报" 0.0 0.0 0.0 x_fact 0.697674 y_fact 31.395349
2 "中国空间科学技术" 0.0 0.0 0.0 x_fact 1.627907 y_fact 6.279070
3 "宇航学报" 0.0 0.0 0.0 x_fact 10.232558 y_fact 22.790698
4 "推进技术" 0.0 0.0 0.0 x_fact 3.255814 y_fact 39.534884
*Matrix 
0.000000 0.000000 0.000000 0.000000 
0.000000 0.000000 0.419390 0.000000 
0.000000 0.419390 0.000000 0.434395 
0.000000 0.000000 0.434395 0.000000