| 单词 | concave-planned | 
| 释义 | > as lemmasconcave-planned   concave-planned adj. ΚΠ a1878    G. G. Scott Lect. Mediæval Archit. 		(1879)	 I. 84  				A rudimental relic of the concave-planned abacus. < as lemmas | 
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