HABIT
发表于 2025-3-21 17:06:06
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分贝
发表于 2025-3-21 22:44:14
978-3-658-27647-8Springer Fachmedien Wiesbaden GmbH, ein Teil von Springer Nature 2019
注意
发表于 2025-3-22 03:32:21
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多嘴多舌
发表于 2025-3-22 08:06:21
How to avoid annoying rolling bearing noises,ogies for example, the number of rolling bearings is increasing. Their benefit is the lower friction loss compared to plain bearings and they suit better to start-stop systems as well with reduced wear when starting from standstill. Furthermore rolling bearings need less oil pump power so that the fuel consumption decreases again.
Arable
发表于 2025-3-22 11:35:01
Extension of acoustic holography to cover higher frequencies,r mesh of measurement positions. To avoid spatial aliasing problems, the mesh spacing must be somewhat less than half of the acoustic wavelength. In practice, this requirement sets a serious limitation on the upper frequency limit.
高谈阔论
发表于 2025-3-22 13:27:14
Automotive Acoustics Conference 2015978-3-658-27648-5Series ISSN 2198-7432 Series E-ISSN 2198-7440
Maximizer
发表于 2025-3-22 18:41:29
https://doi.org/10.1007/978-981-99-7325-5 predictive methodologies approaches are required to identify and reduce the relevant noise sources. In the present case this problem is addressed to the HVAC (Heating, Ventilation, Air Conditioning) systems, including blowers, mixing unit, ducts or registers
Restenosis
发表于 2025-3-22 22:41:40
https://doi.org/10.1007/978-981-99-7325-5ogies for example, the number of rolling bearings is increasing. Their benefit is the lower friction loss compared to plain bearings and they suit better to start-stop systems as well with reduced wear when starting from standstill. Furthermore rolling bearings need less oil pump power so that the fuel consumption decreases again.
textile
发表于 2025-3-23 02:06:00
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帽子
发表于 2025-3-23 06:55:40
https://doi.org/10.1007/978-3-319-39457-2s for positive and negative time, when damping effect is negligible. The main consequence of this property is the possibility of creating time reversed waves travelling back to the location where the primary waves were created. Several applications in bio mechanics, military purposes, room acoustics