braced rib arch桁架式肋拱;有限元法
braced steel arch加固的钢拱架
braced d arch桁拱
braced arch model桁架拱模型
braced-rib arch桁助拱
Braced tied-arch桁架系拱桥
spandrel braced arch WESTBANK构腔拱
braced arch frame撑式拱架
spandrel braced arch构腔拱