*Vertices 4
1 "金属学报" 0.0 0.0 0.0 x_fact 2.327327 y_fact 12.237237
2 "中国有色金属学报" 0.0 0.0 0.0 x_fact 11.486486 y_fact 42.042042
3 "特种铸造及有色合金" 0.0 0.0 0.0 x_fact 9.009009 y_fact 20.720721
4 "铸造" 0.0 0.0 0.0 x_fact 12.462462 y_fact 25.000000
*Matrix 
0.000000 0.333665 0.250730 0.339575 
0.333665 0.000000 0.340852 0.341608 
0.250730 0.340852 0.000000 0.724122 
0.339575 0.341608 0.724122 0.000000