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等時降線

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hbghlyj Posted at 2024-12-7 10:08:10 |Read mode
是一種曲線,將一質點放置在此曲線上任一點使其自由下滑(不計阻力)至最低點所需的時間皆相等。
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2025-4-20 12:23 GMT+8

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