cesium

1. At high, sustained doses, these radioactive elements ─ including iodine and cesium ─ can be dangerous to human health.
   如果人体持续暴露在有高剂量放射性物质的环境中，生命健康将受到危害。碘和铯等都属于放射性物质。
2. A second of time, for instance, is now defined in terms of an electron transition of the cesium atom.
   比如说，秒就是根据铯原子内部的电子跃迁时间来的下定义，而米的定义则和光速有关。
3. Buesseler said the Eureka offshore sample was the only one that showed traces of cesium 134.
   Buesseler说尤里卡小镇是沿海样品中唯一一个发现铯134的踪迹的地方。
4. Numerical Calculation and Experimental Observation for Stark Energy Levels of Atomic Cesium at High Rydberg States
   铯原子高激发态Stark能级的数值计算和实验观察
5. Cesium and water, and even and low temperature to-116 degrees of ice can occur with violent reaction, also can generate stable halogen halide, this is because it is caused by large radius of ions.
   铯和水，甚至和温度低到-116℃的冰均可发生猛烈反应，与卤素也可生成稳定的卤化物，这是由于它的离子半径大所带来的特点。
6. Other Alkali Metals include Hydrogen ( technically not a metal), Lithium, Sodium, Potassium, Rubidium, and Cesium.
   其它碱金属包括氢（技术上说不是种金属），锂，钠，钾，铷，铯。
7. And an ytterbium clock has the potential to be even more accurate and stable than the cesium chronometer.
   镱原子钟甚至可能比铯原子钟更加精确和稳定。
8. Cesium atomic beam frequency standard
   铯原子射束的频率标准
9. The sea near the nuclear plant has also shown elevated levels of radioactive iodine and cesium, prompting the Japanese government to test seafood.
   核电站附近海域海水中放射性铯和碘的含量已经升高，促使日本政府对海产品进行放射性检测。
10. A cesium clock operates by exposing cesium atoms to microwaves until they vibrate at one of their resonant frequencies and then counting the corresponding cycles as a measure of time.
    一个铯钟的工作原理是：将铯原子暴露于微波中，直到它们以一个频率共振，然后以一个相应的周期作为时间度量。
11. In the wet air oxidation, heat and light cesium enough to melt.
    在潮湿空气中，氧化的热量足以使铯熔化并点燃。
12. As a result of these test runs, the cesium beam became the standard for international time.
    最终，这些测试使得铯束成为国际时间的标准。
13. The heart of this atomic clock is a cesium atom that vibrates 9.2 billion times a second when heated to the temperature of boiling water.
    这一原子钟的心脏是一个铯原子，在被加热到水的沸腾温度时，它的振动频率为每秒92亿次。
14. A rare mineral that is an important source of cesium.
    一种稀有矿物，是铯的重要来源。
15. It is the main cesium chloride compound.
    氯化铯是它的主要化合物。
16. Any of the monovalent metals of group I of the periodic table ( lithium or sodium or potassium or rubidium or cesium or francium).
    周期表中I族的任何单价金属（锂、钠、钾、铷、铯和钫）。
17. National Institute of Standards and Technology researchers are developing atomic clocks based on the element ytterbium that could outclass cesium atomic clocks, which currently set the standard.
    美国国家标准技术研究所的研究人员正在开发一种镱原子钟，这种原子钟可能比铯原子钟更好。目前的时间标准是由铯原子钟确定的。
18. Progress in phase equilibrium studies of rare alkali-metal ( rubidium and cesium) salts-mixed solvent ternary and quaternary systems
    稀碱金属铷、铯盐-混合溶剂多元体系相平衡研究进展
19. Engineers are currently planning a two-stage ion exchange process to extract radioactive cesium and technetium from the soluble part of the alkaline tank waste.
    工程师目前正在规划一个两阶段离子交换过程，将具有放射性的铯与从碱性的废料溶液中萃取出来。
20. Method for determination of cesium hydroxide in workplace air by flame atomic absorption spectrometry
    工作场所空气中氢氧化铯的火焰原子吸收测定法
21. The cesium atomic fountain used laser cooling and trapping is a new generation primary frequency standard.
    应用激光冷却与囚禁的铯原子喷泉是新一代的频率基准。
22. The accessibility of acidic protons in12-phosphotungstic acid and its cesium hydrogen salt has been studied by the probe molecule trimethylphosphine and solid state NMR.
    使用与反应分子大小接近的碱性探针分子三甲基膦和固体核磁共振技术，定量研究了磷钨酸及其铯盐的酸位可接近性。
23. A radioactive isotope of cesium used in radiation therapy.
    铯的一种放射性同位素，用于放射疗法。
24. Another example of the cubic lattice system is the body-centered cubic crystal of cesium chloride.
    立方晶系的另一个例子是氯化铯的体心立方晶体。
25. Cesium and organic alkali will occur with other similar reactions, but it's quite lively.
    铯和有机物也会发生同其他碱金属相类似的反应，但它比较活泼。
26. Cold cesium atoms are obtained using magneto-optical trap ( MOT) technology.
    利用磁光阱（MOT）技术获得了铯冷原子。
27. Experimental results show that the slow cesium atomic clock time a very small unit.
    结果实验表明铯原子钟慢了很小的一个时间单位。
28. The metal sheet is coated with a certain special material, such as cesium.
    金属片上涂有象铯那样的某种特殊材料。
29. Cesium versus gold is the same delta electronegativity difference.
    铯和金，具有相同的电负性差。

noun

1. a soft silver-white ductile metallic element (liquid at normal temperatures)

   Synonym:    caesiumCsatomic number 55