| 单词 | rocket-drift |
| 释义 | > as lemmasrocket-drift ΚΠ 1861 Ordnance Man. for Use of Officers (U.S. Army Ordnance Dept.) (new ed.) x. 319 Raise the drift 1 inch above the top of the case; press it to the bottom, and give it three light blows with a rocket-drift. 1875 E. H. Knight Amer. Mech. Dict. III. 1960/1 Rocket-drift, a cylinder of wood tipped with copper, employed for driving rockets. < as lemmas |
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