*Vertices 4
1 "机械工程材料" 0.0 0.0 0.0 x_fact 2.535658 y_fact 11.568938
2 "中国有色金属学报" 0.0 0.0 0.0 x_fact 3.486529 y_fact 67.987322
3 "兵器材料科学与工程" 0.0 0.0 0.0 x_fact 6.656101 y_fact 9.825674
4 "宇航材料工艺" 0.0 0.0 0.0 x_fact 2.060222 y_fact 10.618067
*Matrix 
0.000000 0.253288 0.572987 0.000000 
0.253288 0.000000 0.564155 0.000000 
0.572987 0.564155 0.000000 0.475825 
0.000000 0.000000 0.475825 0.000000