File:Copper alloy jongji.jpg
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Size of this preview: 739 × 600 pixels. Other resolutions: 296 × 240 pixels | 592 × 480 pixels | 947 × 768 pixels | 1,262 × 1,024 pixels | 2,158 × 1,751 pixels.
Original file (2,158 × 1,751 pixels, file size: 149 KB, MIME type: image/jpeg)