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1972年美国便开始对工业设备的噪声进行限制,目前在其他的一些国家也对噪声做了相应的规定。表1给出的是美国职业安全与保健管理总署(简称OSHA)颁布的关于噪声限制的条例规定。调控阀是典型的压
In 1972, the United States began to limit the noise of industrial equipment. At present, noise is also stipulated in other countries. Table 1 shows the regulations on noise limits promulgated by the U.S. Occupational Safety and Health Administration (OSHA). Regulating valve is a typical pressure