| 摘要 |
The noise reduction assembly includes a blower (22) casing, an air intake structure (18) provided with an interior wall (20) including a permeable internal skin (26), an impermeable external skin (28) and one alveolar heart (30) interposed between the two skins. A pipe fitting (36) is fixed at the blower casing and the interior wall of the air intake structure in a way so as to reduce noise. The pipe fitting is fixed at the interior wall blind fixing plug bodies (40') that cross the external skin.
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