| 单词 | double-convex |
| 释义 | > as lemmasdouble-convex double-convex adj. ΚΠ 1693 E. Halley in Philos. Trans. (Royal Soc.) 17 965 If the Lens be Double-Convex. 1865 E. B. Tylor Res. Early Hist. Mankind viii. 199 A double-convex cross section. < as lemmas |
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