1、ICS19.040A21中华人民共和国国家标准GB/T20159.4-2011/IEC/TR60721-4-4:2003环境条件分类环境条件分类与环境试验之间的关系及转换指南无气候防护场所固定使用Classification of environmental condition-Guidance for the correlation andtransformation of environmental condition classes to the environmental tests-Stationary use at non-weatherprotected locations(IE
2、C/TR 60721-4-4:2003,Classification of environmental conditions-Part 4-4:Guidance for the correlation and transformation ofenvironmental condition classes of IEC 60721-3 to the environmental tests ofIEC 60068-Stationary use at non-weatherprotected locations,IDT)2011-12-30发布2012-05-01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
