Wood‚Äö√Ñ√∂‚àö√ë‚àö¬•s theory is described by

1.	Wood‚Äö√Ñ√∂‚àö√ë‚àö¬•s theory is described by _________$
A.	Microscopic voids
B.	Microscopic slip bands
C.	Weak crystal
D.	Grain boundaries
Answer» C. Weak crystal

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