单词swing bridge
na.: 平转[旋]桥
网络: 转体桥
平旋桥；平转桥:
a bridge that can be moved to one side to allow tall ships to pass
平旋桥
平转[旋]桥,旋(开)桥
Restoration and improvement research of transmission mechanism for Swing Bridge
平转式开启桥的传动机构复原与改进研究
turning machinery of swing bridge
旋开桥的转动机械