这个词是什么意思？
Wearable sound-amplifying devices that are intended to compensate for impaired hearing. These generic devices include air-conduction hearing aids and bone-conduction hearing aids. (UMDNS, 1999)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D006310 · MeSH 2026。
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