“thallium-beam clock”的概念、定义、翻译、参考文献-科学参考

单词	thallium-beam clock
释义	thallium-beam clock [`thal·ē·ǝm ¦bēm `kläk] ^HOROLOGY A device similar to a cesium-beam clock, but using a beam of thallium atoms instead of cesium; advantages over cesium are reduced sensitivity to magnetic fields and a higher frequency; the beam, however, is much harder to detect and deflect.
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