*Vertices 4
1 "无机材料学报" 0.0 0.0 0.0 x_fact 0.481541 y_fact 15.409310
2 "材料科学与工艺" 0.0 0.0 0.0 x_fact 6.902087 y_fact 12.680578
3 "中国有色金属学报" 0.0 0.0 0.0 x_fact 4.815409 y_fact 34.189406
4 "摩擦学学报" 0.0 0.0 0.0 x_fact 1.765650 y_fact 37.720706
*Matrix 
0.000000 0.336010 0.000000 0.000000 
0.336010 0.000000 0.412224 0.338569 
0.000000 0.412224 0.000000 0.000000 
0.000000 0.338569 0.000000 0.000000