| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete sound absorption panel of which the curved face processing can be executed, the surface strength is strong, the outer appearance is excellent, and which can be manufactured at a low cost. SOLUTION: A panel-shaped sound absorption member 2 is made of porous concrete and the periphery of the sound absorption member 2 is covered with a structural frame member 3. COPYRIGHT: (C)2004,JPO
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