简支箱形梁
simply supported box girder
50m简支箱梁
50m simply supported box girder
简支箱梁
simply supported girder
simple supported box girder
simple-supported box girder
simple supported box-girder
simple-support box girder
simply supported box girders
simply-supported box girders
simply supported box beams
simple support box girder
Simple-supported Beam
Simply sup-ported Box beam
Simply supported box beam
simple box girder
Simply-supported box beam
Simply-supported box girder
simple box-girder
simple box beam
simply support box gird
简支箱梁桥
Simple-support Box Girder Bridge
双线简支箱梁
Two-lane Simply Supported Box Girder
double-track simple girder
预应力简支箱梁
prestressed simple box girder
槽形简支梁
channel simply supported beam
叉形简支梁
fork-shape simply supported beam
钢筋混凝土简支T形梁桥
reinforced concrete simply-supported T-beam bridge
预应力T形简支梁桥
prestressed and simple suported T-girder bridge
薄壁曲线箱形梁
thin walled curved box girders
钢筋混凝土箱形梁
reinforced concrete box girders
reinforced concrete box beam