EN 16272-1:2023
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 第 1 部分：固有特性 扩散声场条件下的吸声
Railway applications - Infrastructure - Noise barriers and related devices acting on airborne sound propagation - Test method for determining the acoustic performance - Part 1: Intrinsic characteristics - Sound absorption under diffuse sound field cond...