noun🔗Share仮締切A temporary watertight structure that is pumped dry to enclose an area underwater and allow construction work on a ship, bridge, or rig to be carried out; a caisson."Workers built a cofferdam around the bridge pier to keep the river water out while they repaired the concrete. "作業員はコンクリートを修理している間、川の水を締め出すために橋脚の周りに仮締切を建設しました。architecturenauticaltechnicalstructureindustryChat with AIVocabulary GamePractice Reading
noun🔗Share二重底An empty space that acts as a protective barrier between two floors or bulkheads on a ship."The shipbuilder explained that the cofferdam, a crucial safety feature, separated the engine room from the living quarters, preventing fire or flooding from spreading. "造船業者は、重要な安全機能である二重底が、機関室を居住区画から分離し、火災や浸水の拡大を防ぐと説明した。nauticalarchitecturetechnicalChat with AIVocabulary GamePractice Reading
