| 单词 | center of normal curvature | 
| 释义 | center of normal curvature [`sen·tǝr ǝv `nȯrm·ǝl `kǝr·vǝ·chǝr]  MATHEMATICS For a given point on a surface and for a given direction, the normal section of the surface through the given point and in the given direction.  | 
	
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