noise pollution

Discussion on problems of construction and noise adjustment;

施工与噪音协调问题探讨

Noise Analysis and Control in Library;

图书馆的噪音分析与控制

An Elemetary Approach to Meassures for Reducing Noise of High Pressure Water Jet Equipment;

降低高压水射流设备噪音的措施初探

Function of extended high frequency audiometry in early diagnosis of hearing loss of noises and tinnitus;

扩展高频测听对耳鸣及噪音性聋患者早期听力损害的诊断作用

The Base Mode′s Distribution Noises in LD Pumped Solid-state Laser;

LD泵浦固体激光器基模振荡光的场分布噪音

Test results show that the noises and vibrations is reduced greatly under the high-speed,high load and high precision drive requisition and strictly noise control.

检测结果表明,在高速度、高载荷、高精度传动情况下,以及在噪音控制要求较高的场所,对齿轮的轮齿进行齿形修形和齿向修形,能够明显降低齿轮工作中的噪音及振动,是提高齿轮精度等级的行之有效的方法。

The methods of traffic noise reduction of facing street high-level residential building: a case in Beijing;

城市临街高层住宅楼交通噪音的控制方法——以北京望京新城某临街高层住宅楼防噪方法为例

In this paper,a rational evaluation system of traffic noise combined with human health characteristic is set up based on fuzzy theory,and the weight vectors are established with analytic hierarchy process(AHP)-mediation method.

结合人体健康特性和交通噪音特点建立了交通噪音评价体系。

Asphalt rubber pavement can improve using property of road, as well as reduce traffic noise.

为了研究路面降噪性能与橡胶粉沥青混凝土材料组成之间的关系,通过研究轮胎路面交通噪音的发生机理,结合既有经验和实测数据,对橡胶粉沥青路面降噪性能及主要影响因素进行了分析。

Then,the author explores the methods for building and visualizing urban noise pollution in existing 3D city model.

本文提出了综合利用二维矢量数据、航空影像和激光测距与距离修正数据建立三维城市模型的技术路线,并在此基础上探索了城市噪音污染信息在现有三维城市模型中的建模和可视化方法。

The present situation of the noise pollution in China is analyzed in this paper,and the problems in the legislation on noise pollution prevention as well.

噪音污染业已成为除“三废”之外的第四类污染。

On the based of these,the paper explored the methods for building and visualizing urban noise pollution in existing 3D City Model.

提出了综合利用二维矢量数据、航空影像和激光测距与距离修正数据建立三维城市模型的技术路线,并在此基础上探索了城市噪音污染信息在现有三维城市模型中的建模和可视化方法。

After retrofitting not only the water-dropping noise of the cooling tower has been reduced 13 dB, but also the outlet water temperature being lowered by 2.

改造后,冷却塔落水噪音降低了13dB,出塔水温降低了2。