Classification of environmental conditions - classification of groups of environmental parameters and their severities - stationary use at non - weatherprotected locations 环境条件分类.第3部分:环境参数组及其严酷度等级.第4节:在无天气防护场所固定使用的产品
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Classification of environmental conditions - part 3 : classification of groups of environmental parameters and their severities - section 4 : stationary use at non - weatherprotected locations 环境条件分类.第3部分:环境参数组分类及其严酷程度分级.第4节:在无天气防护位置固定使用的产品
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Classification of environmental conditions - part 3 : classification of groups of environmental parameters and their severities - section 4 : stationary use at non - weatherprotected locations ; amendment 1 环境条件分类.第3部分:环境参数组分类及其严酷程度分级.第4节:在无天气防护位置固定使用的产品.修改件1
