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IEC 60027-2A:1975 ed1.0

Заменен
Letter symbols to be used in electrical technology - Part 2: Telecommunications and electronics - First supplement — 27 стр.
Chapter V: Quantities concerning waveguide propagation; Chapter IX: Letter symbols for scattering matrix and transfer matrix; Chapter X: Symbols for use in the field of static convectors using tubes or semiconductor devices; Chapter XI: Automatic control science and technology.
ICS
01.060 Quantities and units / Величины и единицы измерения