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IEC 60250:1969 ed1.0

Заменен
Recommended methods for the determination of the permittivity and dielectric dissipation factor of electrical insulating materials at power, audio and radio frequencies including metre wavelengths — 56 стр.
IEC 60250:1969 ed1.0
Заменен
IEC 62631-2-1:2018 ed1.0
Действует