将产品转换为工业设计初期概念手稿风格，采用黑白铅笔手绘的粗糙线条，线条形态自由舒展，突出产品核心特征线，保留结构构造线与辅助参考线；背景为极简纯白纸张，无高光、无细节刻画、无色彩填充、无阴影，球体类形态以空心轮廓加简单排线呈现。

中文版提示词

请将产品转换为工业设计初期概念手稿风格，采用黑白铅笔手绘的粗糙线条表现，线条形态自由舒展，重点突出产品核心特征线，保留可见的结构构造线与辅助参考线。背景为极简干净的纯白纸张，画面无高光、无细节刻画、无色彩填充、无阴影表现；球体类形态以空心轮廓+简单排线的方式呈现。

英文版提示词

Please convert the product into an early-stage industrial design concept sketch style, using rough black-and-white pencil hand-drawn lines with a free, flowing form. Emphasize the product's core feature lines and keep visible structural construction lines and auxiliary reference lines. The background should be a minimal, clean white sheet of paper, with no highlights, no detailed rendering, no color fill, and no shading. Spherical forms should be presented as hollow outlines with simple hatching.

🛠️ **适用 AI 工具**：Midjourney、Stable Diffusion、DALL·E、即梦、Nano Banana、Flux