hearing aid

hearing aid, Total:4 items.

In the international standard classification, hearing aid involves: Protective equipment.

National Metrological Verification Regulations of the People's Republic of China, hearing aid

• JJG 2038-2004 Measuring Instruments for Audiometry

British Standards Institution (BSI), hearing aid

• BS EN 24869-1:1991 Acoustics - Hearing protectors - Sound attenuation of hearing protectors - Subjective method of measurement

SCC, hearing aid

• CSA Z94.2-1994 Hearing protectors

U.S. Air Force, hearing aid

• AIR FORCE A-A-58084 VALID NOTICE 1-2012 Protector, Hearing

Others:   hearing loss, hearing, hearing strip, hearing loss, Hearing loss identification, hearing aid, hearing aid, auditory nerve, hearing loop system, hearing sound field, hearing report, hearing impairment, hearing loss, hearing impairment, hearing loss, hearing recovery, Audiometer, restore hearing, hearing threshold.