短语词组短语X -type arch bridge 提篮式拱桥double x -shape arch bridge 斜靠式拱桥steel box x -arch bridge 钢箱提篮拱double steel box x -arch bridge 复式钢箱提篮拱long -span X-Style Arch bridge 大跨度提篮拱x -style tied arch bridge 提篮式系杆拱桥 返回 x-bridge