ICS19.020A21中华人民共和国国家标催GB/T4797.6-2013代替GB/T4797.6一1995环境条件分类自然环境条件尘、沙、盐雾Classification of environmental conditions-Environmental conditions appearing in nature-Dust,sand,salt mist(IEC 60721-2-5:1991,Classification of environmental conditions-Part 2:Environmental conditions appearing in nature-Section 5:Dust,sand,salt mist,MOD)2013-11-12发布2014-03-07实施中华人民共和国国家质量监督检验检疫总局中国国家标准化管理委员会发布
