H型钢钢混叠合梁
H-formed steel concrete composite girder
Nb-B系高强度集装箱钢板材料
Nb-B high strength container plate
半封闭钢箱组合梁
semi-closed steel box composite girde
扁平钢箱梁
flat steel-box-girder
flat steel box girder
flat steel box shaped birder
flat steel-box grider
flatpot steel box girder
扁平流线型分体式钢箱梁
streamlined flat separated steel box girders
标准段钢箱梁施工
construction of standard segment of steel box girder
玻璃钢-钢抽油杆
Fiberglass-steel Sucker Rod
玻璃钢—钢混合抽油杆
fiberglass—steel sucker rod string
薄壁空箱钢壳混凝土结构
hollow thin-wall concrete box encased with steel p