*Vertices 3
1 "农业机械学报" 0.0 0.0 0.0 x_fact 4.074980 y_fact 13.854931
2 "农业工程学报" 0.0 0.0 0.0 x_fact 12.306438 y_fact 52.322738
3 "食品科学" 0.0 0.0 0.0 x_fact 2.444988 y_fact 33.822331
*Matrix 
0.000000 0.506055 0.000000 
0.506055 0.000000 0.202684 
0.000000 0.202684 0.000000