*Vertices 4
1 "金属学报" 0.0 0.0 0.0 x_fact 2.096436 y_fact 29.769392
2 "钢铁研究学报" 0.0 0.0 0.0 x_fact 10.691824 y_fact 30.607966
3 "轧钢" 0.0 0.0 0.0 x_fact 6.918239 y_fact 12.159329
4 "钢铁" 0.0 0.0 0.0 x_fact 8.385744 y_fact 27.463312
*Matrix 
0.000000 0.263252 0.000000 0.200985 
0.263252 0.000000 0.489375 0.393859 
0.000000 0.489375 0.000000 0.736218 
0.200985 0.393859 0.736218 0.000000