噪声污染

Secondary noise evolved by the train station is the major source of noise pollution to ambient environment.

在铁路车站噪声影响中，车站影响区域产生的次生噪声相对于站中心的原生噪声，是城区噪声污染的主要因素。

In this paper, a speckle reduction method for SAR images based on Dual Tree Complex Wavelet Transform is proposed. It first presumes the probability distribution function for complex wavelet coefficients of the original nature image, and then applies MAP theory to estimate coefficients from the noisy wavelet coefficients. Filtered image can be derived after inversed DTCWT.

该方法首先对无噪声污染图像的复数小波系数的统计概率分布进行建模；然后利用此先验概率模型，采用最大后验概率方法从含噪小波系数中估计出无噪声污染的小波系数：最后经重构得到滤波后的图像。

Shanghai People's Congress Law Committee, vice chairman of Ding said that in the Bill to seek legislative proposals to the people in the process of more than 70% of the letters and calls are reflected noise pollution-related issues, various types of noise pollution in a number Members of the public life of trouble.

上海人大法律委员会副委员长丁说，在条例草案的立法建议，以寻求在超过70％的信件和电话过程中，人们反映噪声污染相关的问题，各类噪声污染在公共生活中的麻烦大家一个数字。

ABSTRACT :Noise pollution from the sound source, the main route of transmission and the receiver three basic aspects of composition, therefore the control of noise pollution must be part of these three studies as a system.

摘 要：噪声污染由声源，传播途径和受主三个基本环节组成，因此噪声污染的控制必须把这三个环节作为一个系统进行研究。

Article 36 To build expressways, urban overhead road and light-tract lines that traverse areas where there are concentrated noise-sensitive structures and that might produce environmental noise pollution, sound barriers shall be erected or other effective measures shall be taken to control environmental noise pollution.

第三十六条建设经过已有的噪声敏感建筑物集中区域的高速公路和城市高架、轻轨道路，有可能造成环境噪声污染的，应当设置声屏障或者采取其他有效的控制环境噪声污染的措施。

Experimental results demonstrate that the algorithms are robust and imperceptive at the attack of noise stain, low-pass filtering and sampling again.

仿真实验表明，本课题提出的各种算法能有效地抵抗白噪声污染、色噪声污染、低通滤波和重采样对水印的攻击。

Perhaps noise pollution has nothing in your heart,as it doesn't affect you yet,or you can't take care to it.but once you suffered it,it will impressed by its affects.people who work in the condition have deep impression.long-term noise pollution can lead to insomnolence、giddiness、headache,evern more,some will suffer from coronary heart disease、heart muscles disease and so on.this is medical theroy,not lie.

噪声在您的心里也许并没有什么，那是因为您还没有受到它的伤害，或者是还没有注意到它，但当您注意到它是，就再也无法忘记了，长期处于噪声污染中的人是深有体会的，因为长期的噪声污染可以让一位很健康的人失眠，头晕，头痛，严重的会得冠心病，心肌梗岁等，这是医学道理，不是随便说出来的。

Based on summarying the measures of traffic noise control in the world, in terms of theory and experience of noise control , as well as adapting concrete environmental condition and development tendency china western , this paper puts forward the measures of traffic noise control which reduct the effect of noise pollution and accelerat the management of highway environment protection .

在总结国内外防治交通噪声措施的基础上，根据噪声控制的理论经验，结合西部地区具体环境状况和发展趋势，提出了适合中国西部的交通噪声防治对策，以减少噪声污染和推动西部地区交通环保事业的发展。

Noise pollution is one of three main pollutions in the world, and also one of the main pollution in the factory.

噪声污染已成为世界三大污染之一。在工业企业中机床噪声是重要的噪声污染源之一。

In accordance with the pictures which are polluted by two different types of noises---salt-and-pepper noise and Gaussian white noise, the thesis analyzes the parameters in PCNN algorithm one by one in detail, and reaches some serviceable conclusions, pointing out there exist some differences in choosing parameters of the model when removing the salt-and-pepper noise and Gaussian white noise.

本文的工作取得了以下三方面的新进展：(1)在对二值图像进行去噪处理时，针对被两种不同类型的噪声——椒盐噪声和高斯白噪声污染的图像，对PCNN算法中的参数进行逐个地详尽地分析，得出了一些有用的结论，指出当算法具体应用于去除椒盐噪声和高斯白噪声时，参数的选择存在着区别。

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。