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Surface tension experimental demonstration
Thí nghiệm trực quan về sức căng bề mặt của nước. Nguồn: https://commons.wikimedia.org/wiki/File:Surface_tension_experimental_demonstration.ogv Giấy phép: CC BY 3.0 (https://creativecommons.org/licenses/by/3.0) Ghi công: Surface tension experimental demonstration — Jubobroff — nguồn: https://commons.wikimedia.org/wiki/File:Surface_tension_experimental_demonstration.ogv — giấy phép: CC BY 3.0 (https://creativecommons.org/licenses/by/3.0). Đã chuyển sang MP4 H.264, không thay đổi nội dung.
One document — multiple digital files (versions / formats).
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