...hearing loss remits during vertigo attacks 释义：当眩晕发作时听力丧失减轻 behind-the-ear hearing aids 释义：耳背助听器 audiometric hearing zero level 释义：测听(听力)零级 ..
基于12个网页-相关网页
耳背式助听器使用纽扣式电池，合格的产品使用寿命应在200小时左右，按每日使用12小时计算，有效使用期限约为两周。
BTE button battery life, the qualified products should be in 200 hours or so, is calculated by using 12 hours a day, period of validity for about two weeks.
一老汉年高耳背，儿子便给他买了一个助听器。
An old man suffered hard of hearing because of old age, so his son bought him a hearing aid.
就是耳背式助听器的耳机不位于机身内，而是置于佩戴者的耳道内。 一根由细导管包裹绝缘的细导线连接耳机与助听器机身。
This refers to the use of a BTE hearing aid where the receiver (loudspeaker) is placed outside of the hearing aid case and inside the wearer's ear canal.
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