二: two层: I storey; tier; stratum舱: cabin; module吨位: tonnage; shipping ton二层舱: between decks; tween deck cargo space; tween decks二层舱煤舱: tween deck bunker上二层舱: u er tween deck; u er tweendeck; upper tween deck; upper tweendeck下二层舱: lower tweendeck二层甲板二层舱: tween deck上甲板间上二层舱: u er tweendeck; upper tweendeck二层舱污水沟水泥等敷料: shell chock甲板间二层舱中甲板: tweendeck上部甲板间三层舱上二层舱: u er tweendeck; upper tweendeck二层: b2f; second floor吨位: tonnage; shipping ton 登记吨位 register tonnage; 净吨位 net tonnage; 总吨位 total ton; 这艘船的吨位是2万吨。 the ship has a tonnage of twenty thousand.; 吨位税 tonnage tax; 吨位因数 tonnage factor低层舱: lower compartment底层舱: hold 1夹层舱: between deck上层舱: upper-deck cabin; upper-deck hold双层舱: double-decker internal comparison下层舱: lower deck一层舱: sdbc sd single deck第二层: [建筑] [英国] first floor; [美国] second floor二层布: two plies of cloth二层的: bilaminar