noxious
发表于 2025-3-25 04:01:28
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修饰语
发表于 2025-3-25 10:14:27
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IDEAS
发表于 2025-3-25 14:03:10
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灵敏
发表于 2025-3-25 18:14:24
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Rct393
发表于 2025-3-25 22:53:21
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Armory
发表于 2025-3-26 00:14:02
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CERE
发表于 2025-3-26 07:44:28
Silencers,Generally speaking, silencers are technical devices which attenuate a sound field travelling through them along its propagation path.
勉强
发表于 2025-3-26 11:59:12
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narcotic
发表于 2025-3-26 16:14:28
Fundamentals of wave propagation,titive sound incidences, such as a child bouncing a ball, hammering at a construction site, etc., a time delay can easily be observed between the optical perception and the arrival of the acoustic signal. This time delay increases with increasing distance between the observer and the source.
Irremediable
发表于 2025-3-26 17:07:26
Structure-borne sound,erm ‘structure-borne sound’. Structure-borne sound has major importance with respect to solving noise control problems: the air-borne sound into (or from) the aforementioned solid structures is caused by motion in the structure’s surface. In many cases it is the structure-borne sound that is respons