GB/T 11454-1989

Magnetic field strength in audio-frequency induction loops for hearing aid purposes

NORMA vydaná dňa 4.7.1989

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The information about the standard:

Designation standards: GB/T 11454-1989
Note: NEPLATNÁ
Publication date standards: 4.7.1989
Country: Chinese technical standard
Kategória: Technické normy GB