
Reference Coupler For The Measurement Of Hearing Aids Using Earphones Coupled To The Ear By Means Of Ear Inserts
出版:Asociacion Espanola de Normalizacion

专家解读视频
1980 [15/12/1980]
HD 305 : 200S1 - Identical
IEC 60126 : 2.0 - Identical
HD 305 : 200S1 - Identical
IEC 60126 : 2.0 - Identical
HD 305:1975 - Identical
IEC 60126 Ed. 2.0 - Identical