| 词汇 | caesium |
| 释义 | caesiumElements cae·si·um British EnglishBrE, cesium American English /ˈsiːziəm/ noun [uncountableU] a soft silver-white metal that is used in photoelectric cells. It is a chemical element: symbol Cs 铯〔一种化学元素，符号为Cs〕 Examples from the Corpus caesium• It had a caesium 137 concentration of only 4 becquerels per kilogram.• The best caesium clocks achieve a fractional accuracy and stability of between 10 -13; and 10 -14;.• The study stresses that the levels of caesium observed do not pose any risk to health.• The caesium chloride lattice is thus said to have 8:8 coordination.• The caesium chloride structure, for example, consists of a cubic structure of cations and a cubic structure of anions. (1800-1900) Latin caesius “bluish grey” |
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