• 原子钟

atomic BEC原子BECatomicadj.原子的Atomic Fluorescence Spec- trometer原子荧光光谱法Atomic Standing Operating Procedures发射原子弹的固定操作程序Atomic Energy Research Establishment原子能科学研究院atomic equilibrium electronegativity加和型性质atomic angular distribution function原子角分布函数atomic reactor containment structure原子反应堆建筑物Atomic Energy Authority Constabulary原子能管理局保安队atomic-absorbing-spectrum method原子吸收光谱法atomic-molecular double ionization原子分子双电离atomic energy science and technology原子能科学技术

1. 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。
2. 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。