美利体育登录入口官网:IEC 60721-3-3:1994/AMD2:1996
环境条件分类 第3部分:环境参数组及其严酷程度的分类分级 第3节:在有气候防护场所的固定使用 修改2
Classification of environmental conditions - Part 3: Classification of groups of environmental parameters and their severities - Section 3: Stationary use at weatherprotected locations; Amendment 2