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单词 becquerel
释义

becquerel /bekˈə-rel, -rəl or -relˈ/

noun

A derived SI unit, the unit of radioactivity (symbol Bq), defined as the activity of a quantity of radioactive material in which one nucleus decays per second

ORIGIN: AH Becquerel (1852–1908), French physicist
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更新时间:2024/9/22 18:31:09