*Vertices 7
1 "给水排水" 0.0 0.0 0.0 x_fact 14.015417 y_fact 24.807288
2 "中国给水排水" 0.0 0.0 0.0 x_fact 6.447092 y_fact 16.327961
3 "中国环境科学" 0.0 0.0 0.0 x_fact 4.695165 y_fact 9.670638
4 "环境科学" 0.0 0.0 0.0 x_fact 7.778556 y_fact 15.487036
5 "上海环境科学" 0.0 0.0 0.0 x_fact 1.611773 y_fact 2.522775
6 "环境污染治理技术与设备" 0.0 0.0 0.0 x_fact 12.964261 y_fact 16.818500
7 "环境科学与技术" 0.0 0.0 0.0 x_fact 11.352488 y_fact 14.365802
*Matrix 
0.000000 0.853757 0.226992 0.287064 0.700940 0.631555 0.572969 
0.853757 0.000000 0.218420 0.294999 0.639285 0.649994 0.513423 
0.226992 0.218420 0.000000 0.789492 0.238336 0.618348 0.526061 
0.287064 0.294999 0.789492 0.000000 0.367009 0.789947 0.633886 
0.700940 0.639285 0.238336 0.367009 0.000000 0.647201 0.755744 
0.631555 0.649994 0.618348 0.789947 0.647201 0.000000 0.824230 
0.572969 0.513423 0.526061 0.633886 0.755744 0.824230 0.000000