*Vertices 3
1 "陕西师范大学学报" 0.0 0.0 0.0 x_fact 3.561644 y_fact 27.397260
2 "声学技术" 0.0 0.0 0.0 x_fact 8.767123 y_fact 12.054795
3 "声学学报" 0.0 0.0 0.0 x_fact 1.095890 y_fact 60.547945
*Matrix 
0.000000 0.319075 0.000000 
0.319075 0.000000 0.896070 
0.000000 0.896070 0.000000