*Vertices 3
1 "给水排水" 0.0 0.0 0.0 x_fact 12.676056 y_fact 32.218310
2 "中国给水排水" 0.0 0.0 0.0 x_fact 16.373239 y_fact 46.302817
3 "环境科学" 0.0 0.0 0.0 x_fact 4.929577 y_fact 21.478873
*Matrix 
0.000000 0.718830 0.338688 
0.718830 0.000000 0.352803 
0.338688 0.352803 0.000000