*Vertices 4
1 "金属学报" 0.0 0.0 0.0 x_fact 1.195219 y_fact 27.490040
2 "焊接学报" 0.0 0.0 0.0 x_fact 10.756972 y_fact 30.278884
3 "电焊机" 0.0 0.0 0.0 x_fact 15.139442 y_fact 34.462151
4 "焊接" 0.0 0.0 0.0 x_fact 4.382470 y_fact 7.768924
*Matrix 
0.000000 0.000000 0.000000 0.000000 
0.000000 0.000000 0.627591 0.858178 
0.000000 0.627591 0.000000 0.543537 
0.000000 0.858178 0.543537 0.000000