标准号：IEC 60721-3-0:2020
发布日期：2020-05-07
Classification of environmental conditions - Part 3-0: Classification of groups of environmental parameters and their severities - Introduction
IEC 60721-3-0:2020
IEC 60721-3-0:2020
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标准号：IEC 60721-3-0:2020
发布日期：2020-05-07
Classification of environmental conditions - Part 3-0: Classification of groups of environmental parameters and their severities - Introduction
IEC 60721-3-0:2020