1.

The empirical relationship for neck growth rate due to grain boundary transport from sources on the grain boundary is R4= _______

A. 4DBδB\(FK_{2}^1\)/x
B. 4DBδB\(FK_{2}^1\)/x2
C. 4DBδB\(FK_{2}^1\)/a
D. 4DBδB\(FK_{2}^2\)/x
Answer» E.


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