随着现代工业和交通运输业的迅速发展,各种机械的轰鸣、振动,汽车的引擎声、飞机的呼啸声,以及其它杂乱无章的声音,都汇合而成令人烦恼的噪声。日益严重的噪声不仅防碍着人们的日常生活,而且给人体健康带来严重的危害,成为仅决于废 With the rapid development of modern industry and transportation industry, the roar and vibration of various machinery, the engine sound of cars, the whistling of aircraft and other disorganized voices have all become annoying noise. Increasing noise not only hinder people’s daily life, but also to human health serious harm, as determined solely by the waste