*Vertices 10
1 "植物生态学报" 0.0 0.0 0.0 x_fact 3.825666 y_fact 7.384988
2 "植物学报" 0.0 0.0 0.0 x_fact 1.186441 y_fact 6.682809
3 "植物生理学通讯" 0.0 0.0 0.0 x_fact 1.186441 y_fact 3.244552
4 "中国草地" 0.0 0.0 0.0 x_fact 3.486683 y_fact 5.617433
5 "草业科学" 0.0 0.0 0.0 x_fact 5.883777 y_fact 12.832930
6 "内蒙古农业大学学报" 0.0 0.0 0.0 x_fact 0.871671 y_fact 1.113801
7 "草地学报" 0.0 0.0 0.0 x_fact 4.116223 y_fact 5.907990
8 "草业学报" 0.0 0.0 0.0 x_fact 7.990315 y_fact 16.464891
9 "草原与草坪" 0.0 0.0 0.0 x_fact 3.171913 y_fact 4.769976
10 "生态学报" 0.0 0.0 0.0 x_fact 17.118644 y_fact 35.980630
*Matrix 
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