曲线箱形梁
horizontally curved box girder
简支箱形梁
simply supported box girder
引桥箱形梁
box girder of approach span
薄壁曲线箱形梁
thin walled curved box girders
箱形梁类焊接结构
welded box girder structure
钢筋混凝土箱形梁
reinforced concrete box girders
reinforced concrete box beam