片语
bent girder construction stent排架主梁施工支架
girder construction system梁式结构体系
ring girder construction环梁施工
beam and girder construction治梁梁格结构;交梁结构
t girder constructiont梁施工
Main girder construction主梁施工
continuous box girder construction连续箱梁施工
girder bridge construction梁桥施工
Box girder construction箱梁施工