*Vertices 3
1 "工业建筑" 0.0 0.0 0.0 x_fact 24.250681 y_fact 50.408719
2 "建筑结构" 0.0 0.0 0.0 x_fact 7.901907 y_fact 37.329700
3 "施工技术" 0.0 0.0 0.0 x_fact 4.904632 y_fact 12.261580
*Matrix 
0.000000 0.780012 0.530867 
0.780012 0.000000 0.399195 
0.530867 0.399195 0.000000