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中华人民共和国劳动和劳动安全行业标准噪声作业分级ＬＤ８０—１９９５Ｃｌａｓｓｉｆｉｃａｔｉｏｎｏｆｗｏｒｋｅｘｐｏｓｅｄｔｏｎｏｉｓｅ１９９５－０７－１３批准１９９６－０６－０１实施（中华人民共和国劳动部）前言为了控制噪声危害，加强噪声作业劳动条件的...
The People’s Republic of China labor and labor safety industry standard noise operation classification LD80-1995Classificationofworkexposedtonoise1995-07-13 approved 1996-06-01 implementation (People’s Republic of China Ministry of Labor) Foreword In order to control the noise hazards, strengthen the noise working conditions of labor ...