短語詞組短語an arch cofferdam 拱形圍堰double curvature arch cofferdam 雙曲拱圍堰rcc arch cofferdam rcc 拱圍堰Floatable arch cofferdam 浮式拱圍堰double -curvature arch cofferdam 雙曲拱圍堰 返回 arch cofferdam