英语词汇“radioactivity”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

　

单词	radioactivity
释义	WordReference Random House Learner's Dictionary of American English © 2024 ra•di•o•ac•tiv•i•ty /ˌreɪdioʊækˈtɪvɪti/USA pronunciation n. [uncountable] Physicsthe property of certain elements as radium and uranium, by which they release dangerous or harmful radiation because of changes in the nuclei of their atoms. WordReference Random House Unabridged Dictionary of American English © 2024 ra•di•o•ac•tiv•i•ty (rā′dē ō ak tiv′i tē),USA pronunciation n. [Physics, Chem.] Physicsthe phenomenon, exhibited by and being a property of certain elements, of spontaneously emitting radiation resulting from changes in the nuclei of atoms of the element. Also called activity. radio- + activity 1895–1900 Collins Concise English Dictionary © HarperCollins Publishers:: radioactivity /ˌreɪdɪəʊækˈtɪvɪtɪ/ n the spontaneous emission of radiation from atomic nuclei. The radiation can consist of alpha, beta, and gamma radiation
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更新时间：2025/2/23 4:55:47