urban environmental noise

基本解釋

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(jiān)測數(shù)據(jù)的分析，探討了由于城市區(qū)域功能的改變，環(huán)境噪聲監(jiān)測數(shù)據(jù)反映的城市環(huán)境噪聲平均水平的相應(yīng)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(huán)境噪聲的高空監(jiān)測值與地面網(wǎng)格測值間的定量關(guān)系作了理論推導(dǎo)。
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(huán)境噪聲常采用地面網(wǎng)格點(diǎn)測值，再求其能量平均。