Risk Analysis of Coupling Fault Propagation Based on Meta-Action for Computerized Numerical Control (CNC) Machine Tool

Table 2

Numerical scale [35].

Indicator is compared with indicator
Equally important	1
Relatively important	3
Obviously important	5
Strongly important	7
Extremely important	9
Intermediate value between the above two adjacent judgments	2, 4, 6, 8
Factor exchange comparison result	Reciprocals