结果该区域背景噪声值较高，但其等效声级达标。
Results The equivalent sound levels (LAeq) were qualified in spite of higher background value of noise in this areas.
结论平均等效声级可以作为评价和比较工业企业的噪声危害程度的综合指标。
Conclusion the average equivalent sound level maybe as comprehensive index to evaluate the noise hazard in industrial enterprises.
道路沿线建筑、绿化、坡降、路面宽窄、交通管理等对等效声级也有很大影响。
All have shown that build and afforestation along traffic main, slope, road width, traffic management and so on have great effect.
烟尘控制区逐年扩大，市区区域环境噪声等效声级56.6分贝，达到国家规定的控制目标。
Smoke and dust control area is extending year by year, and noise in urban area is controlled below 56.6 DB, meeting the national standard.
并运用该模型预测道路交通噪声的等效声级，把预测因子作为样本输入到网络模型，噪声等效声级作为样本输出。
Then use this model to predict equivalent continual sound level of road traffic noise, the fluence factors as the traffic flowing and the equivalent acoustic levels were output.
结果听损检出率随平均等效声级的增加而呈明显的增加趋势，平均等效声级与噪声作业人员的听损检出率呈密切的指数正相关关系（相关系数r为0 812 45 ）。
Results The average equivalent sound level and the detectable rate of workers hearing loss were exponential positive correlation, the coefficient of correlation r was 0 812 45.
针对拉萨市道路交通噪声污染问题，运用人工神经网络理论和方法对拉萨市道路交通噪声的等效连续声级进行预测。
Aiming at the traffic noise problem of Lhasa, the author USES artificial neural network theory and method to predict the equivalent consecutive sound level of traffic noise in Lhasa.
通过实验拟合提出了等效虚源法，该新方法可简便准确地预测体声源和面声源在不同距离的影响声级；
The new method can simply forcast noise level affected by volume source or area source at different distances.
根据《机场周围飞机噪声环境标准(GB9660- 88)》，以计权等效连续感觉噪声级LWECPN作为机场噪声评价量。
According to the standard of aircraft noise environment around Airport (GB9660-88), LWECPN (Weighted Equivalent Continuous Perceived noise Level) is selected as noise metrics.
根据《机场周围飞机噪声环境标准(GB9660- 88)》，以计权等效连续感觉噪声级LWECPN作为机场噪声评价量。
According to the standard of aircraft noise environment around Airport (GB9660-88), LWECPN (Weighted Equivalent Continuous Perceived noise Level) is selected as noise metrics.
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