*Vertices 5
1 "焊接学报" 0.0 0.0 0.0 x_fact 5.500000 y_fact 15.833333
2 "中国机械工程" 0.0 0.0 0.0 x_fact 1.833333 y_fact 33.833333
3 "电焊机" 0.0 0.0 0.0 x_fact 12.166667 y_fact 22.000000
4 "焊接" 0.0 0.0 0.0 x_fact 10.333333 y_fact 14.333333
5 "焊接技术" 0.0 0.0 0.0 x_fact 8.500000 y_fact 14.000000
*Matrix 
0.000000 0.203672 0.561733 0.828120 0.700754 
0.203672 0.000000 0.230062 0.000000 0.000000 
0.561733 0.230062 0.000000 0.685305 0.636211 
0.828120 0.000000 0.685305 0.000000 0.897616 
0.700754 0.000000 0.636211 0.897616 0.000000