*Vertices 5
1 "机械工程材料" 0.0 0.0 0.0 x_fact 5.298013 y_fact 17.880795
2 "材料保护" 0.0 0.0 0.0 x_fact 3.752759 y_fact 34.437086
3 "材料开发与应用" 0.0 0.0 0.0 x_fact 5.960265 y_fact 6.622517
4 "材料导报" 0.0 0.0 0.0 x_fact 8.830022 y_fact 36.644592
5 "航空制造技术" 0.0 0.0 0.0 x_fact 0.883002 y_fact 4.415011
*Matrix 
0.000000 0.262079 0.547954 0.304342 0.000000 
0.262079 0.000000 0.552201 0.000000 0.255919 
0.547954 0.552201 0.000000 0.673867 0.606339 
0.304342 0.000000 0.673867 0.000000 0.000000 
0.000000 0.255919 0.606339 0.000000 0.000000