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单词
baryon-to-photon ratio
释义
baryon-to-photon ratio
baryon-to-photon ratio
[
′bar·ē‚än tə ′fō‚tän ′rā·shō
]
(astronomy)
The estimated ratio of the number of baryons (mostly protons and neutrons) to photons (mostly in the cosmic microwave radiation) in the universe.
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更新时间:2025/12/22 10:16:49