*Vertices 3
1 "西北农林科技大学学报" 0.0 0.0 0.0 x_fact 1.886792 y_fact 6.988120
2 "干旱地区农业研究" 0.0 0.0 0.0 x_fact 3.354298 y_fact 9.923131
3 "应用生态学报" 0.0 0.0 0.0 x_fact 2.795248 y_fact 83.088749
*Matrix 
0.000000 0.440970 0.000000 
0.440970 0.000000 0.282040 
0.000000 0.282040 0.000000