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BNC: 16448 COCA: 20084

radioactivity

noun
/ˌreɪdiəʊækˈtɪvəti/
/ˌreɪdiəʊækˈtɪvəti/
[uncountable]
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  1. harmful radiation that is sent out when the nuclei (= central parts) of atoms are broken up放射性的;有辐射的
    • the study of radioactivity放射性研究
    • a rise in the level of radioactivity辐射强度的增加
    Topics Physics and chemistryc1
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
BNC: 16448 COCA: 20084
radioactivity

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