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Novel ultra-slim acoustic impedance transformer（英国）
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Release Time:2021-09-09
First Author:
Yulin Mei
Disigner of the Invention:
王晓明,梅艺璇,王元秀
Application Number:
EP3468223
Authorization Date:
2016-07-18
Authorization Number:
EP16902832.1(英国)
Date:
2021-09-09
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Broadband Ultrathin Sound Absorption and Sound Insulation Structure Controlling an Acoustic Wave Propagation Path（英国）
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