噪声污染

Due to the multi-resolution feature of the wavelet transform, the signal that is reconstructed, after using the Birge-Massart strategy to deal with the wavelet coefficient, could be de-noised without losing the power of the absorption line.

根据小波变换多分辨率的特点，对受噪声污染的光谱信号进行小波变换，按照Birge-Massart策略对其小波系数进行阈值处理，实现在保留吸收峰信息的同时去除噪声的目的。

The fifth chapter: regionally environmental program. Through argument of environmental reasonability of general program, set down the control goals of waste gas, waste water discharging, sound pollution and solid waste, and established preventing program of pollution and ecological environment..

第五章：区域环境规划，通过对区域总体发展规划的环境合理性论证，确定了经济技术开发区大气污染、废水排放、噪声污染、固体废物等环境污染控制目标，并制定了污染防治规划和生态环境规划等。

Introduced the development general situation of the domestic and international superhighway first and its to the ecosystem environment the influence that result in with endanger;Then discussed the air pollution that superhighway cause respectively is contaminative with the noise pollution, the synopsis introduces its evaluation method with compute the model,carrying out the solutions to the pollutions ;It also introduce the water pollution situation of the subsidiary facilities in superhighway in this article and as to it's handle the choice of the craft proceeded the discussion.

首先介绍了国内外高速公路的发展概况及其对生态环境造成的影响和危害；然后分别讨论了高速公路引起的大气污染和噪声污染，简要介绍了其评价方法和计算模型，并有针对性的提出了对策；文中还对高速公路附属设施所造成的废水污染做了介绍，并对其处理工艺的选择进行了讨论。

Indoor environment and human health are closely related, not only environmental factors affecting indoor air pollution, noise pollution, but also easier to overlook the visual pollution.

室内的环境与人体健康密切相关，影响室内环境的因素不仅有空气污染、噪声污染，还有容易被人忽视的视觉污染。

This paper describes a new algorithm of image enhancement of impulse noise based on PCNN time matrix and rough sets indiscernibility relation. For noisy gray images, the results of computer simulations show that the image noise can be reduced efficiently and the image becomes clear and the target details of the image can be enhanced better by using this algorithm. In addition, the effects of this algorithm are better than usual image enhancement algorithm.

基于粗集理论中的不可分辨关系的等价概念及PCNN赋时矩阵，提出了一种含有脉冲噪声的图像增强算法，计算机仿真结果表明，对被噪声污染的灰度图像，用基于PCNN与粗集理论相结合的图像增强算法处理后，图像噪声得到有效抑制，画面更清晰，图像中目标的细节也得到了很好的增强，其结果优于常规方法。

The performance of the method is saliently improved in eliminating the noise and preserving the edge of the image when the noise ratio is high.

对不同类型、受不同强度噪声污染图像的去噪实验表明，该方法在不同噪声率下均优于传统的中值滤波法及其一些改进算法，当噪声率较大时其去噪和保边性能得到了显著提高。

Among these environment protection problems, traffic noise has a closerelationship with people's daily life and it attracts more and more concern. A lotof countries make a great deal of study to find out that the tread pattern noise isthe main source of traffic noise when car at speed above 70km/h.

在这些环保问题中，汽车噪声污染是与人们的日常生活息息相关的，越来越为全世界所关注，许多国家为此进行了大量的研究，发现当车速高于70公里/小时时，轮胎花纹噪声便成为车辆噪声的主要来源。

Two algorithms breaks through the shortcoming of weighting value immobilizes in the traditional average filter algorithm, and it can characteristic adjust the weights from of data in the filter window, thus makes the weights from noise point is very small contributing to the output date.

两种算法突破了传统的均值算法中加权值固定不变的缺点，可以根据窗口内数据的特点来自适应的调整赋予每个采样点的权值，从而使受噪声污染的信号对输出的权值贡献非常小，而且通过对滤波因子的调整，使得对于脉冲噪声和高斯噪声均有良好的抑制作用。

The layout of airfield is designed and adjusted rationally by means of founding a noise prediction model, protracting noise isobars diagrams and using space analysis function of GIS, which is validated by the combination with structure instance.

机场内部营区噪声污染严重，因此，在营区规划初期对营区范围内噪声进行合理预测和规划就显得尤为重要，通过建立噪声预测模型，绘制噪声等值线图，利用GIS的空间分析功能，对营区布局进行合理规划和调整，并结合实例进行可行性验证。

The paper analysed the characteristics of noise pollution in cement plant harm to human health, and emphasized the control theory and detail method of noise from ball mill and fan, fianlly put forward the control measure.

文章分析了水泥厂噪声污染的特点，阐述了噪声对人健康的危害，重点分析了球磨机和风机噪声的控制原理和具体方法，提出了综合治理的措施。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。