importance degree
1.Research was made on the optimum design of new road network to def ine the unit design unblocked index and the unit design importance degree.
2.Grey correlation analysis is applied in the model identification of the fault diagnosis.In accordance with the importance degree of basis case, the possibility of fault model could be judged correctly in the fault tree analysis, which provides a scientific basis for fault handling in order of importance and urgency.
9.We also show that higher the combination of importance grade and performance rating the higher the degree of MF.

