| 摘要 |
<p>- According to the invention, this material comprises: . a core (2) having a cellular structure, the cells (3) of which are open and pass through the said core; . an acoustically absorbent material (4), filling up the said cells (3) in the said core; . sheets (bands) (5) of strong fibres impregnated with rigid polymerised resin, the said sheets being firmly attached to the faces (2A, 2B) of the said core and covering the said faces only partially in order to leave openings (8) between them; and - wide-meshed trellises (6) made of strong fibres impregnated with rigid polymerised resin, the said trellises covering both the said sheets (5) and the said openings (8) and being firmly attached to the said faces (2A, 2B) of the said core (2). <IMAGE></p> |
