BS EN 16272-2:2023
铁路应用 基础设施 作用于空气传播声音的隔音屏障和相关装置 确定声学性能的测试方法 固有特性 扩散声场下的空气隔声…
Railway applications. Infrastructure. Noise barriers and related devices acting on airborne sound propagation. Test method for determining the acoustic performance - Intrinsic characteristics. Airborne sound insulation under diffuse sound field…