Research on Multiobjective Topology Optimization of Diesel Engine Cylinder Block Based on Analytic Hierarchy Process

Table 6

Meanings of relative scale.

Relative scale	Meanings
1	Two elements have equal importance
3	The former is slightly important than the latter between two elements
5	The former is obviously important than the latter between two elements
7	The former is strongly important than the latter between two elements
9	The former is extremely important than the latter between two elements
2, 4, 6, 8	Indicating the intermediate value above judgment
Reciprocal	If the important ratio between the elements and is , the important ratio between the elements and i is .