| 单词 | safety keel |
| 释义 | > as lemmassafety keel safety keel n. ΚΠ 1832 Naut. Mag. Dec. 526 (heading) Vindication of Mr. Oliver Lang's claims to the invention of the safety keel. 1874 S. J. P. Thearle Naval Archit. (new ed.) I. 53 The late Mr. Lang introduced what were termed ‘safety keels’ and are now known as ‘thick garboards’. 1995 N. Friedman U.S. Submarines through 1945 iv. 66 (caption) Cramp's Laurenti-designed Thrasher (G4)... Note the droppable safety keel. < as lemmas |
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