| 单词 | range board | 
| 释义 | > as lemmasrange board   range board  n. rare a board in a fortress, fortification, etc., giving the distance of certain objects which are within range of guns. ΚΠ 1876    G. E. Voyle  & G. de Saint-Clair-Stevenson Mil. Dict. 		(ed. 3)	 326/2  				Range Board, this nature of board..has the distances painted on it of prominent objects within the range of the guns mounted on the works. < as lemmas | 
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