DIN 4899:1978-09

Действует

Linear electric multiports — 8 стр.

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Отменен

Letter symbols for physical quantities; symbols to be used in electrical communication technology — 24 стр.

Отменен

Symbols used in formulae applying to electric communication technique — 6 стр.

Отменен

Directions and signs in electrical engineering; rules for electric and magnetic circuits, equivalent circuit diagrams — 8 стр.

Действует

Principles of terminology for physical quantities; composition of terms with adjectives and substantives — 10 стр.

Действует

Transmission systems and two-ports; symmetry characteristics of linear two-ports — 3 стр.