Applied to the half of a hollow cylinder bisected longitudinally. (See concave, n. 1b.)
| 单词 | θ99221 |
| 释义 | the world > space > shape > curvature > curved surface > [adjective] > concave > of half of hollow cylinder (1) semi-concave1626 Applied to the half of a hollow cylinder bisected longitudinally. (See concave, n. 1b.) |
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