单词	radionuclide
释义	radionuclide /ˌreɪdɪəʊˈnjuːklʌɪd / noun A radioactive nuclide.Alpha emitting radionuclides emit alpha particles, each consisting of 2 protons and 2 neutrons.... This is a partial list of radionuclides that decay by positron emission and have been used in biomedical imaging studies. Gamma radiation from medically useful radionuclides is substantially attenuated by 1 to 2 inches of lead.
随便看	chronotherapy chronotropic chronotropism chronotropy chronotype chrysalid chrysalis chrysanth chrysanthemum chryselephantine Chrysler, Walter chrysoberyl chrysocolla chrysolite chrysomelid chrysoprase Chrysostom, St John chrysotile chrystoleum Chrétien de Troyes Chrétien, Jean chthonian chthonic chub Chubb

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