Last Updated：2025/11/21
An extremely accurate reference clock whose operation is based on an atomic process, typically the frequency of electromagnetic radiation associated with a specified energy-level transition in an element such as cesium.
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atomic clock
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Source Word
atomic clock
Noun
proscribed
Japanese Meaning
原子時計：原子のエネルギー準位の遷移に起因する電磁放射の周波数を利用して動作する、極めて高精度な基準時計。
（ plural ）
