ex·tra·dos 
(ĕkstrə-dŏs′, -dōs′)
(ĕkstrə-dŏs′, -dōs′)n. pl. ex·tra·dos (-dōz′) or ex·tra·dos·es (-dŏs′ĭz)
The upper or exterior curve of an arch.
[French : Latin extrā, outside; see EXTRA- + French dos, back (from Latin dorsum).]
| 单词 | extrados |
| 释义 | ex·tra·dos (ĕkstrə-dŏs′, -dōs′)n. pl. ex·tra·dos (-dōz′) or ex·tra·dos·es (-dŏs′ĭz) The upper or exterior curve of an arch. [French : Latin extrā, outside; see EXTRA- + French dos, back (from Latin dorsum).] |
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