薄壁曲面件
workpieces with thin-wall curved surface
变截面薄壁箱梁
thin-walled box girder with variable cross-section
薄壁曲线箱梁
thin walled curved box girder
thin walled curved box girders
thin-walled curved box girders
薄壁曲线箱形梁
thin walled curved box girders
多变形截面薄壁管
thin-walled tube with polygonal section
封闭截面薄壁杆
thin walled elliptical bar
任意截面薄壁杆件
thin-walled bars with general sections
平面－曲面求交
plane-surface intersection
平面—曲面求交
plane-surface intersection
曲面曲率划分
division of curvature on surface
曲面曲线
surface curve
curves on general curved surface