| 单词 | coincidence boundary | 
| 释义 | coincidence boundary [kō`in·sǝ·dǝns ´bau̇n·drē]  CRYSTALLOGRAPHY A grain boundary separating crystal lattices which are rotated with respect to each other by an angle with a special value, resulting in a periodic grain boundary structure and an extension of a sublattice of the original lattice across the boundary.  | 
	
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