swing-on bridge翻译;悬体桥
Swing-installation of bridge桥梁转体施工
single-leaf swing bridge单叶平转桥;单叶平旋桥
centre-bearing swing bridge中心平旋桥
N-COUNT（可数名词） A swing bridge is a low bridge that can be opened either in the middle or on one side in order to let ships pass through. 平旋桥