Extrados

[eks'treidɔs]

解釋/意思:

(noun.) the exterior curve of an arch.

編輯:韦斯利--From WordNet

解釋/意思:

(n.) The exterior curve of an arch; esp., the upper curved face of the whole body of voussoirs. See Intrados.

整理:纳特

解釋/意思:

n. the convex surface of an arch or vault.

校對:凯特