*Vertices 4
1 "畜牧兽医学报" 0.0 0.0 0.0 x_fact 8.095238 y_fact 19.047619
2 "畜牧与兽医" 0.0 0.0 0.0 x_fact 13.571429 y_fact 31.904762
3 "中国畜牧杂志" 0.0 0.0 0.0 x_fact 8.333333 y_fact 19.523810
4 "中国兽医科技" 0.0 0.0 0.0 x_fact 7.619048 y_fact 29.523810
*Matrix 
0.000000 0.380128 0.635537 0.576650 
0.380128 0.000000 0.401264 0.424123 
0.635537 0.401264 0.000000 0.000000 
0.576650 0.424123 0.000000 0.000000