暂时中止
发表于 2025-3-28 16:22:34
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crucial
发表于 2025-3-28 19:07:29
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萤火虫
发表于 2025-3-29 02:03:32
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态学
发表于 2025-3-29 06:13:56
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maculated
发表于 2025-3-29 09:25:04
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某人
发表于 2025-3-29 13:09:59
Active Noise Control in Acoustic Cavities with Flexible Walls,e primary excitation for the enclosure can be in the form of volume velocity or piston sources as well as excitation acting on the structure. Minimization of acoustic potential energy is employed for deciding the source strength(s) of the secondary sources for active control. The significant feature
jumble
发表于 2025-3-29 15:50:46
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不规则
发表于 2025-3-29 20:43:42
An Environmental Impact Assessment of a Projected Airport Noise,surement of long range (5 km) sound propagation over a sea surface was carried out with the MLS correlation method. Although, clear relationships could not be found between the measured noise reduction data and the meteorological conditions observed simultaneously, useful statistical data of excess
Estimable
发表于 2025-3-30 03:25:49
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褪色
发表于 2025-3-30 05:49:50
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