*Vertices 4
1 "生物工程学报" 0.0 0.0 0.0 x_fact 16.014235 y_fact 35.231317
2 "生物技术通讯" 0.0 0.0 0.0 x_fact 1.423488 y_fact 4.982206
3 "中国生物工程杂志" 0.0 0.0 0.0 x_fact 9.252669 y_fact 20.996441
4 "中国农学通报" 0.0 0.0 0.0 x_fact 0.000000 y_fact 38.790036
*Matrix 
0.000000 0.439280 0.579575 0.000000 
0.439280 0.000000 0.396411 0.000000 
0.579575 0.396411 0.000000 0.220611 
0.000000 0.000000 0.220611 0.000000