noun 下载 🔗分享 纵梁，桁条. A thin strip of wood or metal, to which the skin of an aircraft is fastened. Examples : "The airplane's aluminum skin was riveted to the longeron, providing strength and a smooth surface. " 这架飞机的铝制外壳铆接在纵梁 (zòngliáng) 上，这样既增加了强度，又提供了平滑的表面。 material part technology machine vehicle structure 与AI对话词汇游戏阅读练习
