灰色金属横梁总成白底产品图

白底工业产品摄影，一根长条状灰色金属横梁总成水平放置，两端为圆角矩形端头并带向下安装支架，支架有螺栓和关节结构，横梁中部上方固定黑色长条模块，下方有两个圆柱形支座和细黑色线束，金属表面有轻微磨痕与哑光质感，正面平视，横向长幅构图，均匀柔和白光，背景纯白，画幅比例约3.2:1。

Industrial product photography on a pure white background, a long gray metal crossbeam assembly placed horizontally, rounded rectangular end caps at both ends with downward mounting brackets, bolts and joint structures on the brackets, a black elongated module fixed on top at the center, two cylindrical supports and thin black wiring below, slightly worn matte metal surface, front orthographic view, wide horizontal composition, soft even white lighting, pure white background, aspect ratio about 3.2:1.