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一、前言工业生产中的噪声给人们带来严重危害;噪声已被列为三大公害之一。如何与噪声作斗争是劳动保护的一项内容,也是评价机械产品质量主要指标之一。原一机部明文规定: “噪声不合格者定为不合格
I. Introduction Noise in industrial production has brought serious harm to people; noise has been listed as one of the three major public hazards. How to fight against noise is a part of labor protection and one of the main indicators to evaluate the quality of mechanical products. The original machine department expressly states: ”Noise unqualified as unqualified