*Vertices 3
1 "热带海洋学报" 0.0 0.0 0.0 x_fact 0.000000 y_fact 15.137615
2 "中国农业科学" 0.0 0.0 0.0 x_fact 6.422018 y_fact 52.293578
3 "农业生物技术学报" 0.0 0.0 0.0 x_fact 21.100917 y_fact 32.568807
*Matrix 
0.000000 0.000000 0.510678 
0.000000 0.000000 0.686370 
0.510678 0.686370 0.000000