*Vertices 4
1 "植物生理学通讯" 0.0 0.0 0.0 x_fact 6.782946 y_fact 23.255814
2 "园艺学报" 0.0 0.0 0.0 x_fact 9.496124 y_fact 39.341085
3 "湖北农业科学" 0.0 0.0 0.0 x_fact 10.852713 y_fact 17.829457
4 "农药" 0.0 0.0 0.0 x_fact 0.775194 y_fact 19.573643
*Matrix 
0.000000 0.601666 0.618573 0.000000 
0.601666 0.000000 0.454784 0.000000 
0.618573 0.454784 0.000000 0.326265 
0.000000 0.000000 0.326265 0.000000