Image: 环形算盘
Size of this preview: 761 × 600 pixels. Other resolutions: 305 × 240 pixels | 2,792 × 2,200 pixels.
Original image (2,792 × 2,200 pixels, file size: 4 MB, MIME type: image/jpeg)
Description: 环形算盘。
Title: 环形算盘
Credit: Own work
Author: 三猎
Usage Terms: Creative Commons Attribution-Share Alike 4.0
License: CC BY-SA 4.0
License Link: https://creativecommons.org/licenses/by-sa/4.0
Attribution Required?: Yes
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