... 原子谱学 atomic spectroscopy 原子标准 atomic standard 原子阻止本领 atomic stopping power ...
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原子标准频率 atomic frequency standard
原子时标准 atomic time standard
原子频率标准 atomic frequency standard ; AFS
原子束频率标准 [物] atomic beam frequency standard
原子长度标准 atomic length standard
国际原子能机构标准 IAEA
原子吸收标准 Atomic Absorption Standards
铯束原子频率标准 Cesium atomic beam frequency standard ; cesium frequency standards
氢激射型原子频率标准 [核] hydrogen maser frequency standard
要使晶体振荡器的输出信号保持原子标准所固有的频率准确度和稳定度，所用压控晶体振荡器必须具有优良的性能。
The performance of VCXO must be excellent so as to maintain the inherent frequency accuracy and stability of the atomic standard.
遗憾的是，一秒钟的标准定义依赖于原子在绝对零度的条件，而实际的时钟需要在室温下运行，室温条件下电子壳层膨胀了。
Unfortunately, the standard definition of a second relies on what the atom does at a temperature of absolute zero. Real clocks need to run at room temperature, where the shell of electrons puffs up.
在科罗拉多州园石的国家标准与技术研究所的James Chin - Wen Chou，带领了一个研究团队，用原子时钟显示了在更为常见尺度范围内相对论对时间的影响。
Of the National Institute of Standards and Technology in Boulder, Colorado, led a team that used atomic clocks to show the effects of relativity at more familiar scales.
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