2) echo board
回声屏<声>
3) acoustic shielding
声屏蔽(声)
4) absorbent lined barrier
吸声屏障<声>
5) absorbing sound barrier
吸声声屏障
1.
Noise reduction efficiencies of straight-type and incline-type absorbing sound barriers along railway were measured and comparatively analyzed.
通过对铁路直立型与内倾型吸声声屏障的实际降噪效果测试与对比分析,得出声屏障对800~3500 Hz频带范围内的铁路噪声插入损失最为明显,约为12~20 dB(A);内倾型声屏障的降噪量比直立型声屏障高4~6 dB(A)。
6) sound barrier
声屏障
1.
Study on sound barrier based on microperforated panel structure with top absorbing cylinder;
顶部带吸声柱体的微穿孔声屏障的应用研究
2.
Influence of geometry shapes of sound barrier on noise reduction effect in high speed railway
高速铁路声屏障几何形状对降噪效果的影响
3.
Through field measuring and theoretic calculation to train noise,combined with main influential factors to noise mitigation effect of railway sound barrier,proof wall is considered to be effective and economical to the noise sensitive building with 1 or 2 floor along railway when the train speed is lower than 250 km/h.
通过对现场铁路列车辐射噪声测量和理论分析计算,结合影响铁路声屏障降噪效果主要因素,得出如下结论:当列车运行速度低于250 km/h时,对铁路沿线1~2层噪声敏感点建筑,采用防撞墙既有效又经济;声屏障相对越高、距轨道中心线越近,降噪效果越好。
补充资料：屏屏
1.层叠貌。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条