ๅทฒ็Ÿฅ๐‘Ž_๐‘–โˆˆ๐‘, ๐‘Ž1โ‰ค๐‘Ž2โ‰ค๐‘Ž3โ‰ค๐‘Ž4โ‰คโ€ฆโ‰ค๐‘Ž_(๐‘›โˆ’3)โ‰ค๐‘Ž_(๐‘›โˆ’2)โ‰ค๐‘Ž_(๐‘›โˆ’1)โ‰ค๐‘Ž_๐‘›๏ผŒไธๅฎšๆ–น็จ‹โˆ‘24_(๐‘–=1)^๐‘›โ–’๐‘Ž_๐‘– = โˆ24_(๐‘–=1)^๐‘›โ–’๐‘Ž_๐‘– ๆญฃๆ•ดๆ•ธ่งฃ็š„ๆŽข่จŽ

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2018-12-??

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ๅœ‹็ซ‹่‡บ็ฃๅธซ็ฏ„ๅคงๅญธ็ง‘ๅญธๆ•™่‚ฒไธญๅฟƒ
Science Education Center,National Normal University

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