GB/T 7582-1987

Acoustics—Threshold of hearing by air conduction as a function of age and sex for otologically normal persons

NORMA vydaná dňa 27.3.1987

The information about the standard:

Designation standards: GB/T 7582-1987
Note: NEPLATNÁ
Publication date standards: 27.3.1987
Country: Chinese technical standard
Kategória: Technické normy GB