噪聲污染(英文)

1、 nIn 1981, 300 audience lost consciousness and coma at modern open-air music held in the United States. nIn 1959, the United States, there are 10 voluntarily making noise test, when the experimental aircraft from flying over 10 volunteers 10-12 meters high, six people died on the spot. nIn 1960, the

2、 Japanese city of Hiroshima, a man was tortured by the noise from the nearby factory. He killed factory owners finally. The noise is so The noise is so terrible !terrible ! Noise makes Noise makes people angry. people angry. 一.About the voice nSound, a manifestation of vibration, travels in wave pat

3、terns through solids, liquids and gases. n聲音,振動表現(xiàn), 通過固體、液體和氣體沿波模式振 動。 Sound waves Amplitude and wavelength 振幅和波長 People generally hear sounds People generally hear sounds between the “threshold of between the “threshold of hearing” and the “threshold of hearing” and the “threshold of pain”.pain”. In

4、 terms of pressure, this is 20 In terms of pressure, this is 20 PaPa 100 Pa. 100 Pa. The decibel scale was developed The decibel scale was developed from this fact and makes numbers from this fact and makes numbers more manageable.more manageable. The decibel scale generally The decibel scale genera

5、lly ranges from approximately 0 to ranges from approximately 0 to 130.130. Sound and human hearing The voice people dont need and Interfere with peoples normal life , work and rest is referred to as NOISE. Noise cause adverse effects on the surrounding environment. This kind of situation is called n

6、oise pollution. 二二.About the noise.About the noise 1.The definition of noise1.The definition of noise 2.The2.The characteristics of the noisecharacteristics of the noise uNoise is among the most pervasive pollutants today uNoise is unavoidable for many machines uWe experience noise in a number of wa

7、ys environmental cause and victim generated by others “second-hand” uNoise negatively affects human health and well- being uThe air into which second-hand noise is emitted and on which it travels is a commons“. Noise is among the most pervasive pollutants today . nWhat are the noise pollution in dai

8、ly life. nMechanical noise (機(jī)械噪聲) nGas noise （氣體噪聲） nThe electric magnetic noise（電磁性噪 聲） 3.The types of noise3.The types of noise The most harmful noise in daily life is Mechanical noise (機(jī)械噪聲) . The most common are The factory machinery and Traffic noise . Factory machinery Traffic noise Constructi

9、on noise Noise pollution has become the second to the air pollution in the environment risk factors. What are the harm of noise? What are the implications for human? 三.The harm of noise nDamaging hearing, affect work, study, rest and sleep . nCausing disease, affect human body health. nThe service l

10、ife of the machinery and equipment can be affected by strong noise, The growth of plants and animals are damaged. Strong noise will Strong noise will take away your take away your “ears”!“ears”! 四.Prevention and control of noise For noise regulation, a lot of measures to be adopted. In view of the c

11、onstruction and the factory has introduced some policies ,management and supervision system is established . nPublic security department supervise and manage the traffic noise, noise of social activities. nRailway departments supervise and manage the station using the horn and the train running nois

12、e. 1.Measures for the prevention and 1.Measures for the prevention and control of industrial noise control of industrial noise pollutionpollution The noise pollution of industrial enterprises should take measures to reduce the impact on the surrounding environment. Complying with the discharge stand

13、ard of Industrial noise emissions within the city limits. 2.The measures to prevent the 2.The measures to prevent the traffic noise pollutiontraffic noise pollution nIt is forbidden to manufacture, sell, excessive amounts of imported cars nDriving motor vehicles and vessels in the city should not be

14、 any installation and use of the alarm nDesignating roads and time for using motor vehicles nAutomobile muffler(消聲器) and the speaker should meet the requirements in the city limits .Strengthening the maintenance（維修 保養(yǎng)）to prevent pollution. 3.The Measures of public noise 3.The Measures of public nois

15、e pollution prevention and controlpollution prevention and control nIn a public place, gathering, entertainment use speakers that must be approved by the ministry of public security . nMeasures should be taken to avoid the impact on the residents when using electrical appliances, instruments, home entertainment, indoor decoration. nIt is prohibited to use loudspeakers in commercial activities . 5.