这个词是什么意思？
Emission or propagation of acoustic waves (SOUND), ELECTROMAGNETIC ENERGY waves (such as LIGHT; RADIO WAVES; GAMMA RAYS; or X-RAYS), or a stream of subatomic particles (such as ELECTRONS; NEUTRONS; PROTONS; or ALPHA PARTICLES).
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D011827 · MeSH 2026。
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