*Vertices 4
1 "油气田地面工程" 0.0 0.0 0.0 x_fact 0.093197 y_fact 0.279590
2 "油气储运" 0.0 0.0 0.0 x_fact 3.168686 y_fact 8.574091
3 "石油学报" 0.0 0.0 0.0 x_fact 2.889096 y_fact 33.364399
4 "天然气工业" 0.0 0.0 0.0 x_fact 7.548928 y_fact 57.781920
*Matrix 
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0.210665 0.000000 0.000000 0.296675 
0.456872 0.000000 0.000000 0.000000 
0.000000 0.296675 0.000000 0.000000