基本解释[土木建筑工程]筒形穹顶英汉例句双语例句Its roof structure adopts double-layered steel grids structure of barrel vault.该馆屋盖采用双层筒形钢网壳结构，屋面为彩色夹芯板和局部采光玻璃。barrel vault roof更多例句词组短语短语barrel -vault roof 筒形穹顶barrel vault roof更多词组专业释义土木建筑工程筒形穹顶