*Vertices 4
1 "催化学报" 0.0 0.0 0.0 x_fact 6.361323 y_fact 35.496183
2 "分子催化" 0.0 0.0 0.0 x_fact 6.743003 y_fact 11.068702
3 "石油化工" 0.0 0.0 0.0 x_fact 14.758270 y_fact 36.132316
4 "天然气化工" 0.0 0.0 0.0 x_fact 10.814249 y_fact 17.302799
*Matrix 
0.000000 0.825247 0.488957 0.576032 
0.825247 0.000000 0.545239 0.655589 
0.488957 0.545239 0.000000 0.672937 
0.576032 0.655589 0.672937 0.000000