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BNC: 16448 COCA: 20084
radioactivity
noun [U] chemistry /ˌreɪdiəʊækˈtɪvəti/
  1. 1
    a form of energy that is produced by a radioactive substance and is harmful in large amounts 辐射;放射;辐射能
     Synonyms and related words
  2. 2
    the ability that some substances have to produce energy in the form of radiation 放射性
     Synonyms and related words
BNC: 16448 COCA: 20084
radioactivity

noun

... OF RADIOACTIVITY | VERB + RADIOACTIVITY | RADIOACTIVITY + NOUN ... OF RADIOACTIVITYlevel輻射強度The soil contains 30 times the acceptable level of radioactivity.這片土壤的輻射強度高於標準 30 倍。VERB + RADIOACTIVITYproduce, release產生/釋放輻射the amount of radioactivity released by nuclear power plants核電廠釋放出的輻射量detect, determine, measure, monitor探測/確定/測量/監控輻射RADIOACTIVITY + NOUNlevels輻射強度
BNC: 16448 COCA: 20084

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