食料
发表于 2025-3-25 04:46:40
Wave Motion,n motion. The disturbance set up by flicking the string will travel down the string. During the passage of the disturbance, each particle of the string remains at rest until the disturbance reaches it, at which instant the particle is displaced, returning to its original position once the disturbanc
异教徒
发表于 2025-3-25 11:05:06
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社团
发表于 2025-3-25 12:06:36
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残酷的地方
发表于 2025-3-25 17:32:46
General Properties of Waves,led the .. We can explain the effect using the relationship between wave velocity and frequency given by equation (3.5). We assume that the velocity, ., of the wave is independent of the velocity of the source of the wave.
馆长
发表于 2025-3-25 22:57:27
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arthroscopy
发表于 2025-3-26 01:48:53
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稀释前
发表于 2025-3-26 06:27:03
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杀子女者
发表于 2025-3-26 10:45:11
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BOOST
发表于 2025-3-26 16:05:34
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刺耳的声音
发表于 2025-3-26 20:30:29
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