老式CRT电视机线框模型

单色灰调三维线框与CAD产品展示风格，老式CRT电视机，正面略偏左视角，厚重矩形机身，内凹弧形屏幕表面覆盖规则网格且无画面显示，屏幕外框有斜面倒角与分段接缝，下方一排矩形按键，底座左侧为横向散热格栅，右侧为矩形面板，底部有小支脚，纯浅灰背景，无明显阴影，冷灰单色，线框描边叠加浅灰面，完整机身入镜，方形画幅约1:1，产品展示构图。

Monochrome gray 3D wireframe and CAD product-display style, vintage CRT television, three-quarter front view slightly from the left, thick rectangular cabinet, recessed curved screen covered with a regular grid and no displayed image, beveled screen frame with segmented seams, a row of rectangular buttons below the screen, base with horizontal ventilation grille on the left and a rectangular panel on the right, small feet, plain light gray background, no obvious shadows, cool gray single-color palette, technical line-art overlay with pale gray surfaces, full cabinet in frame, near-square 1:1 aspect ratio, product presentation composition.