最終更新日：2024/06/25
(nautical) a keel (beam along the underside of a ship’s hull) / Short for 竜骨突起 (ryūkotsu tokki, “keel”) (extension of a bird's sternum)
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竜骨
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竜骨
noun
(nautical) a keel (beam along the underside of a ship’s hull) / Short for 竜骨突起 (ryūkotsu tokki, “keel”) (extension of a bird's sternum)
意味（1）
(nautical) a keel (beam along the underside of a ship’s hull)
意味（2）
Short for 竜骨突起 (ryūkotsu tokki, “keel”) (extension of a bird's sternum)
