机械硬币：创新宏观摄影庆典

一个 2x2 的机械硬币网格，旨在颂扬人类的创新。这些硬币是它们所描绘机器的厚实外壳。

[左上角：“达芬奇”硬币，木质纹理，描绘了一架带有拍打式帆布翅膀的[随机飞行器]]

[右上角：“特斯拉”硬币，铜和瓷质，描绘了一座产生真实微型闪电弧的[随机线圈塔]]

[左下角：“爱迪生”硬币，黑色铁质，描绘了一个在玻璃中心发光的[随机灯泡灯丝]]

[右下角：“巴贝奇”硬币，黄铜齿轮，描绘了一台带有旋转数字拨盘的[随机计算引擎]]

微距摄影，工程剖面图风格，油脂和油污纹理，博物馆展示照明，8k 分辨率。

---

**Original English:**
A 2x2 grid of mechanical coins celebrating human innovation. The coins are thick housings for the machines they depict. 

[Top Left: The "Da Vinci" Coin, wooden texture, featuring a [Random Flying Machine] with flapping canvas wings]

[Top Right: The "Tesla" Coin, copper and porcelain, featuring a [Random Coil Tower] generating real miniature lightning arcs]

[Bottom Left: The "Edison" Coin, black iron, featuring a [Random Lightbulb Filament] glowing inside a glass center]

[Bottom Right: The "Babbage" Coin, brass gears, featuring a [Random Calculation Engine] with spinning number dials]

Macro photography, engineering cutaway style, grease and oil textures, museum display lighting, 8k resolution.