这个词是什么意思？
The branch of physics that deals with sound and sound waves. In medicine it is often applied in procedures in speech and hearing studies. With regard to the environment, it refers to the characteristics of a room, auditorium, theatre, building, etc. that determines the audibility or fidelity of sounds in it. (From Random House Unabridged Dictionary, 2d ed)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D000162 · MeSH 2026。
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