GB/T 7614-1987

An artificial ear of wide band type for the calibration of earphones used in audiometry

NORMA vydaná dňa 2.4.1987

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The information about the standard:

Designation standards: GB/T 7614-1987
Note: NEPLATNÁ
Publication date standards: 2.4.1987
Country: Chinese technical standard
Kategória: Technické normy GB