| 单词 | radioactive series |
| 释义 | > as lemmasradioactive series radioactive series n. Physics a series of radioactive nuclides each member of which decays into the next, together with a non-radioactive end product; the series of transformations relating such a set of nuclides; esp. each of four such series occurring among the nuclides heavier than lead (the thorium, actinium, and radium (or uranium) series, which occur naturally and terminate with different isotopes of lead, and the neptunium series); = series n. 14b. ΘΚΠ the world > matter > physics > atomic nucleus > radioactive isotope > radioactive nuclide > [noun] > series series1903 radioactive series1907 1907 Jrnl. Amer. Chem. Soc. 29 1705 The activity of the equilibrium amount of any member of a radioactive series is proportional to its range. 1926 R. W. Lawson tr. G. von Hevesy & F. A. Paneth Man. Radioactivity xxiv. 184 The element thorium is the parent element of a radioactive series. 1956 I. Asimov Inside Atom v. 85 The entire set of changes is an example of a radioactive series. This particular one we have been talking about is the uranium-238 series. 1997 C. Clark Radium Girls, Women & Industr. Health Reform 1 As radium decayed through its radioactive series, it produced radon, a radioactive gas, most of which would have been exhaled. < as lemmas |
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