自1949年首个原子钟(以氨分子为磁振源)面世以来，原子钟的精度每十年就几乎提高十倍。
Every 10 years since the first one debuted in 1949, based on oscillations in the ammonia molecule, the accuracy has increased by about 10 times.
自1949年首个原子钟(以氨分子为磁振源)面世以来，原子钟的精度每十年就几乎提高十倍。
Every 10 years since the first one debuted in 1949, based on oscillations in the ammonia molecule, the accuracy has increased by about 10 times.
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