配偶
发表于 2025-3-28 15:21:58
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艺术
发表于 2025-3-28 21:01:41
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黄油没有
发表于 2025-3-29 01:14:33
Introduction,e . of . systems and the . of . systems. The harmonic oscillator and the Kepler problem show regular motion, while systems as simple as a periodically driven pendulum or an autonomous conservative double pendulum can display chaotic dynamics.