*Vertices 3
1 "实验力学" 0.0 0.0 0.0 x_fact 4.651163 y_fact 28.488372
2 "爆炸与冲击" 0.0 0.0 0.0 x_fact 11.046512 y_fact 41.860465
3 "工程爆破" 0.0 0.0 0.0 x_fact 2.325581 y_fact 29.651163
*Matrix 
0.000000 0.328999 0.000000 
0.328999 0.000000 0.282447 
0.000000 0.282447 0.000000