串通
发表于 2025-3-28 14:53:57
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使人烦燥
发表于 2025-3-28 20:34:29
https://doi.org/10.1007/978-3-663-10648-7Energie; Instabilität; Mechanik; Regelung; Regelungstheorie; Stabilität; Stabilitätstheorie
SOBER
发表于 2025-3-28 23:00:56
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Anthology
发表于 2025-3-29 04:28:03
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Counteract
发表于 2025-3-29 09:26:24
Celestial Mechanics ProblemsThe equations of motion of central force motion of a point mass are given by . If the attracting force directed to the center satisfies Newton’s laws, we have .. and . are the polar coordinates of motion, . and . are the masses of the two bodies, and . and . are certain constants.