*Vertices 3
1 "机械科学与技术" 0.0 0.0 0.0 x_fact 18.127786 y_fact 31.500743
2 "机械工程学报" 0.0 0.0 0.0 x_fact 10.698366 y_fact 30.609212
3 "中国机械工程" 0.0 0.0 0.0 x_fact 11.292719 y_fact 37.890045
*Matrix 
0.000000 0.746913 0.677336 
0.746913 0.000000 0.594598 
0.677336 0.594598 0.000000