*Vertices 4
1 "工程热物理学报" 0.0 0.0 0.0 x_fact 5.072464 y_fact 23.550725
2 "固体火箭技术" 0.0 0.0 0.0 x_fact 7.065217 y_fact 15.942029
3 "航空动力学报" 0.0 0.0 0.0 x_fact 10.326087 y_fact 28.985507
4 "推进技术" 0.0 0.0 0.0 x_fact 9.420290 y_fact 31.521739
*Matrix 
0.000000 0.000000 0.358963 0.000000 
0.000000 0.000000 0.249024 0.660659 
0.358963 0.249024 0.000000 0.549757 
0.000000 0.660659 0.549757 0.000000