urban environmental noise

基本解释

The average level of urban environmental noise is changing with the changes of urban environmental function based on analyzing the noise monitoring data in recent years.
通過對歷年噪聲監測數據的分析，探討了由於城市區域功能的改變，環境噪聲監測數據反映的城市環境噪聲平均水平的相應變化。
In this paper, the relationship between the altitude monitored values and the ground latticed measuring values of the urban environmental noise are derived theoretically.
本文就城市環境噪聲的高空監測值與地麪網格測值間的定量關系作了理論推導。
Ground measurements of latticed points are usually made and the mean energy of the measuring values is then found to determine the urban environmental noise in our country for the time being.
目前，我國確定城市環境噪聲常採用地麪網格點測值，再求其能量平均。