*Vertices 4
1 "矿山机械" 0.0 0.0 0.0 x_fact 6.749556 y_fact 18.827709
2 "工程机械" 0.0 0.0 0.0 x_fact 0.710480 y_fact 4.440497
3 "中国机械工程" 0.0 0.0 0.0 x_fact 2.131439 y_fact 36.234458
4 "摩擦学学报" 0.0 0.0 0.0 x_fact 0.710480 y_fact 40.497336
*Matrix 
0.000000 0.322900 0.000000 0.000000 
0.322900 0.000000 0.000000 0.000000 
0.000000 0.000000 0.000000 0.000000 
0.000000 0.000000 0.000000 0.000000