(航空学)其外形由坚固的、龙骨状的结构以及内部气压两者同时支撑。
(aeronautics) having a form maintained by a rigid keel-like structure as well as by internal gas pressure.
铝制船舶上的腐蚀的通常形式是船体钢板、船舵、船底龙骨上的局部点状腐蚀，特别是在焊缝方面。
Corrosion on Aluminum vessels is also generally in the form of localized pitting to the hull plate, rudders, bilge keels and particularly in way of weld seams.
象脊或龙骨的，有脊或龙骨的；成脊状突起的。
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