高度
发表于 2025-3-25 05:43:07
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Pigeon
发表于 2025-3-25 11:16:39
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folliculitis
发表于 2025-3-25 12:09:54
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文艺
发表于 2025-3-25 18:33:50
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muster
发表于 2025-3-25 20:34:46
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Inelasticity
发表于 2025-3-26 03:30:17
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1FAWN
发表于 2025-3-26 08:19:33
Aufgaben zu Technische Mechanik 1-3unity. Acoustics is important in design because many machines have to meet noise and vibration specifications. It is good engineering practice to design quiet machinery since, all other things being equal, the quiet machine is preferred by the customer to the noisy one. Noise is often an indicator of damaging vibration within a machine.
讽刺滑稽戏剧
发表于 2025-3-26 09:59:02
Semantik, Verifikation und Test analogue of the pressure variation by means of a transducer. Instead of dealing directly with the pressure changes, we study a changing voltage or current which has the same behaviour with respect to time. If we want to generate a sound we also start with an electrical waveform, and again use a transducer to convert it into a pressure change.
neutral-posture
发表于 2025-3-26 12:44:39
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invade
发表于 2025-3-26 17:42:37
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