| 单词 | dihedron |
| 释义 | dihedral /dī-hēˈdrəl/, sometimes diedral /dī-ēˈdrəl/ (mathematics, etc)adjectiveBounded by two planes, or two plane faces nounA dihedral angle ORIGIN: Gr di- twice, and hedrā a seat dihēˈdron noun The limiting case of a double pyramid when the vertices coincide dihedral angle noun The angle made by the wing of an aeroplane with the horizontal axis |
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