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1 "中国超声医学杂志" 0.0 0.0 0.0 x_fact 7.120743 y_fact 17.027864
2 "中国医学影像技术" 0.0 0.0 0.0 x_fact 8.281734 y_fact 50.386997
3 "中华超声影像学杂志" 0.0 0.0 0.0 x_fact 9.752322 y_fact 22.755418
4 "临床超声医学杂志" 0.0 0.0 0.0 x_fact 7.507740 y_fact 9.829721
*Matrix 
0.000000 0.385465 0.750932 0.894840 
0.385465 0.000000 0.316129 0.332538 
0.750932 0.316129 0.000000 0.775988 
0.894840 0.332538 0.775988 0.000000