If a real physical system shows a variation of both material properties across the graded layer, the assumed linear variation may not give the best approximation.
A.shows
B.assumed
C.may
D.approximation
正确答案：may
If a real physical system shows a variation of both material properties across the graded layer, the assumed linear variation may not give the best approximation.
A.shows
B.assumed
C.may
D.approximation
正确答案：may