工业金属齿轮机械零件实物商业照片

正向提示词： Extreme close-up of precision gears, macro photography, brass and steel metal, mechanical movement, shallow depth of field, bokeh background, studio light, detailed machining, (intricate details:1.3), industrial design, product photography style, metallic shine, no text 负向提示词： plastic, rust, fingerprints, full machine visible, human hands, dirty background, motion blur, low contrast, oversaturated