*Vertices 4
1 "环境与职业医学" 0.0 0.0 0.0 x_fact 3.942652 y_fact 13.261649
2 "中国职业医学" 0.0 0.0 0.0 x_fact 2.867384 y_fact 13.620072
3 "现代预防医学" 0.0 0.0 0.0 x_fact 2.508961 y_fact 13.620072
4 "中国卫生检验杂志" 0.0 0.0 0.0 x_fact 5.017921 y_fact 59.498208
*Matrix 
0.000000 0.293314 0.000000 0.000000 
0.293314 0.000000 0.000000 0.000000 
0.000000 0.000000 0.000000 0.266544 
0.000000 0.000000 0.266544 0.000000