The atomic clock is accurate to one millionth of a second.
原子钟计时可以精确到百万分之一秒.
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In a traditional atomic clock , atoms are illuminated by microwaves, in the gigahertz frequency range.
在传统的原子钟里, 原子受到吉赫波段的微波照射.
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The atomic clock enabled scientists to measure time with much greater accuracy.
原子钟使科学家能够以更大的精度来测算时间.
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Scientists developed the first atomic clock in 1949.
科学家们于1949年制作了第一台原子钟.
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Such a molecular or atomic clock is now being developed and promises to be very accurate.
这种分子和原子钟目前正在发展中,预期能有很高的准确度.
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