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工程机械在作业过程中,对环境造成的公害主要是噪声、振动和废气污染。下面仅对噪声问题作一简单介绍。一、噪声的危害噪声是各种不同频率和声强的声音无规律的杂乱组合。从生理学观点来讲,凡是使人感到烦噪的、不需要的声音都叫噪声。噪声也是一种声波,具有声波的一切特
In the process of construction machinery, the environmental pollution caused by the construction machinery is mainly noise, vibration and exhaust pollution. The following is a brief introduction to the noise problem. First, the harm of noise Noise is a variety of different frequencies and sound intensity of the sound of the disorderly combination. From the physiology point of view, all unpleasant noises are noise. Noise is also a kind of sound wave, with all the special features of sound waves.