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DIN EN 60721-3-7/A1:1997-07

Действует
Classification of environmental conditions - Part 3: Classification of groups of environmental parameters and their severities; section 7: Portable and non-stationary use; Amendment A1 (IEC 60721-3-7:1995/A1:1996); German version EN 60721-3-7:1995/A1:1997