片语
Three-truss main girder三片桁架主梁
concrete steel truss composite girder桁梁结合梁
plate and truss composite girder板桁结合梁
frame girder构架梁
steel truss composite girder板桁组合结构
steel plate-truss composite girder钢板桁组合梁
steel truss stiffening girder钢桁架加劲梁
steel truss girder bridge钢桁梁桥
plate truss composite girder板桁结合梁