Isophone metropolitan area - LNight (ULR)

The isophone tapes show the spatial reproduction of the sound propagation for the noise index LNight (night noise index) of round 4 of the environmental noise mapping within agglomerations with the other lines and marshalling and transhipment stations

等声线磁带展示了第四轮城镇集聚群环境噪声制图中，针对带有其他线路及编组站与转运站的集聚区域的夜间噪声指数（LNight）的声传播空间重现结果。