*Vertices 5
1 "制造技术与机床" 0.0 0.0 0.0 x_fact 5.174353 y_fact 9.898763
2 "机械科学与技术" 0.0 0.0 0.0 x_fact 8.998875 y_fact 17.660292
3 "机械工程学报" 0.0 0.0 0.0 x_fact 13.723285 y_fact 29.921260
4 "中国机械工程" 0.0 0.0 0.0 x_fact 11.698538 y_fact 33.295838
5 "机械制造" 0.0 0.0 0.0 x_fact 8.098988 y_fact 9.223847
*Matrix 
0.000000 0.381652 0.463701 0.605370 0.808765 
0.381652 0.000000 0.605344 0.607040 0.829479 
0.463701 0.605344 0.000000 0.797691 0.644572 
0.605370 0.607040 0.797691 0.000000 0.741249 
0.808765 0.829479 0.644572 0.741249 0.000000