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词汇 radiocarbon
释义

Definition of radiocarbon in English:

radiocarbon

noun ˌreɪdɪəʊˈkɑːb(ə)nˌreɪdioʊˈkɑrbən
mass nounChemistry
  • A radioactive isotope of carbon.

    〔化〕放射性碳,碳-14

    Example sentencesExamples
    • Dark Age people might possibly have been burning very old wood, if they'd found it in a bog, and in that case radiocarbon would date the growth of the tree, not the time if its burning.
    • Also contamination of an object with more recent radiocarbon, leading to an inaccurate date, is always a threat and difficult to detect.
    • These data were compared with the distribution of radiocarbon in free glucose and fructose isolated from the same sample.
    • Living organisms acquire a characteristic minor fraction of radiocarbon by equilibrating with the carbon dioxide of ambient air or surrounding waters.
    • Some of these neutrons react with nitrogen atoms in air, converting them into a radioactive isotope of carbon: carbon - 14 or radiocarbon, with eight neutrons in each nucleus.

Rhymes

carbon, chlorofluorocarbon, graben, hydrocarbon, Laban

Definition of radiocarbon in US English:

radiocarbon

nounˌrādēōˈkärbənˌreɪdioʊˈkɑrbən
Chemistry
  • A radioactive isotope of carbon.

    〔化〕放射性碳,碳-14

    Example sentencesExamples
    • Some of these neutrons react with nitrogen atoms in air, converting them into a radioactive isotope of carbon: carbon - 14 or radiocarbon, with eight neutrons in each nucleus.
    • Also contamination of an object with more recent radiocarbon, leading to an inaccurate date, is always a threat and difficult to detect.
    • Living organisms acquire a characteristic minor fraction of radiocarbon by equilibrating with the carbon dioxide of ambient air or surrounding waters.
    • These data were compared with the distribution of radiocarbon in free glucose and fructose isolated from the same sample.
    • Dark Age people might possibly have been burning very old wood, if they'd found it in a bog, and in that case radiocarbon would date the growth of the tree, not the time if its burning.
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