| 单词 | pointing-wire | 
| 释义 | > as lemmaspointing-wire ΚΠ 1850    Ordnance Man. for Use of Officers 		(U.S. Army Ordnance Dept.)	 		(ed. 2)	 339/1 		(table)	  				For each mortar: 1 sponge and rammer... 2 pointing wires. 1875    E. H. Knight Pract. Dict. Mech.  				Pointing-wire, an iron wire with a loop at one end, used for sighting mortars by, when the proper line of fire has once been found. < as lemmas | 
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