| 单词 | extrados |
| 释义 | extrados /ek"streuh dos', -dohs', ek stray"dos, -dohs/, n. , pl. extrados /-dohz', -dohz/, extradoses. Archit. the exterior curve or surface of an arch or vault. Also called back. Cf. intrados. See diag. under arch. [1765-75; < F, equiv. to extra- EXTRA- + dos back ( < L dorsum DORSUM] |
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