| 摘要 |
<p>The compound sound protection system for an area bounding a room comprises a floor, wall or ceiling lining (V), a sound damping layer (D) with a specified minimum flexural loss factor, and a sound insulation layer with specified uniaxial expansion loss factor, dynamic stiffness and density. The combined maximum thickness of the sound damping and insulating layers is limited to 14 mm.</p> |
