叉形薄壁箱梁
Y-shape thin-walled box girder
矩形薄壁箱梁
rectangular thin-walled box girder
Rectangle thin-walled box girder
梯形薄壁箱梁
trapezoidal thin-walled box girder
薄壁曲线箱形梁
thin walled curved box girders
流线形薄壁钢箱梁
Streamline flat thin wall box girder
变高度薄壁箱梁
thin-walled box girder with variable height
变截面薄壁箱梁
thin-walled box girder with variable cross-section
薄壁箱梁
thin wall box
Thin-wall Box Girder
thin walled box girder
Thin-walled Box Girder
thin-walled box beam
thin-walled box-girder
thin walled box beam
box-section beams
thin walled box girders
thin-wall box-girder beam
薄壁箱梁单元
element of thin-walled box girder
薄壁箱梁结构
Thin-walled box beam structure
薄壁箱梁截面
Thin-walled Box Girder Section
薄壁箱形截面钢柱
thin-walled box steel column
混凝土薄壁箱梁
Concrete Thin-walled Box Girder
起重机薄壁箱梁
thin walled box girder of crane
悬臂混凝土薄壁箱梁
cantilever concrete thin-walled box girder