
Acoustics; Threshold Of Hearing By Air Conduction As A Function Of Age And Sex Otologically Normal Persons
出版:Swiss Standards

专家解读视频
1992 [01/02/1992]
"Indice de classement: SNV NF S31-082" (12/2001)
DIN EN 27029 : 1992 - Identical
DIN EN 27029 : 1992 - Identical
DIN EN 27029 (1992-03) - Identical
ISO 7029:2000 - Identical