防ぼう撓とう材ざいMeanings1nounstiffenerTechnical term in naval architecture and structural engineering; a structural member used to reinforce plating against bending or buckling.船せん体たいの外がい板はんには防ぼう撓とう材ざいが溶よう接せつされている。Stiffeners are welded to the hull plating.
