| 单词 |
sectroid |
| 释义 |
sectroid|ˈsɛktrɔɪd| [? f. sector + -oid.] The curved surface of two adjacent groins in a vault.
1860Newlands Carp. & Joiner's Assist. 77 To find the covering of the smaller sectroid BPLOD. 1875in Knight Dict. Mech. |

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