*Vertices 3
1 "农业机械学报" 0.0 0.0 0.0 x_fact 7.135362 y_fact 19.727177
2 "农业工程学报" 0.0 0.0 0.0 x_fact 8.919203 y_fact 60.440714
3 "中国机械工程" 0.0 0.0 0.0 x_fact 1.049318 y_fact 19.832109
*Matrix 
0.000000 0.497743 0.224622 
0.497743 0.000000 0.000000 
0.224622 0.000000 0.000000