复古绿色工业机械装置俯视产品图

9:16竖幅工业产品实物摄影，俯视机位，一台复古绿色金属机械装置居中完整入镜，置于浅灰白纯净背景。左侧为弧形绿色金属护罩，中央为深色长椭圆护罩，护罩内上下各有一个黑色同心圆盘状皮带轮，中间有窄长凹槽与皮带通道；右侧伸出黑色球头操纵杆和金属连杆；底部为带长条安装孔的金属底座；外壳表面可见铰链、铆钉、销钉、轻微磨损与划痕。均匀柔和顶光，低反差，金属表面有轻微反光，整体呈复古工业色调，构图端正对称，突出机械结构与材质细节，无人物。

Vertical 9:16 industrial product photograph, overhead camera angle, a vintage green metal mechanical device centered and fully in frame on a plain light gray-white background. On the left is a curved green metal guard; in the center is a dark elongated oval guard containing two black concentric circular pulleys, one at the top and one at the bottom, with a narrow recessed belt channel between them; on the right extend a black ball-headed control lever and metal linkage; at the bottom is a metal mounting base with long slot holes; the housing shows hinges, rivets, pins, slight wear, and scratches. Even soft top lighting, low contrast, subtle metal reflections, retro industrial color palette, balanced composition, clear mechanical structure and material details, no people.