| 单词 | uranium series |
| 释义 | > as lemmasuranium series uranium series n. the series of isotopes produced by the radioactive decay of uranium-238 and ending with lead-206, each member of the series resulting from the decay of the previous one; cf. uranium lead n. ΘΚΠ the world > matter > physics > atomic nucleus > radioactive isotope > specific isotopes > [noun] > uranium uranium1902 uranium series1906 radium series1909 1906 Nature 27 Dec. 195/2 We cannot but conclude that actinium is a member of the uranium series. 1947 Proc. Royal Soc. A. 190 30 206Tl has been shown to be a member of the uranium series of elements. 1973 J. Yarwood Atomic & Nucl. Physics viii. 246 There are three main series of radioactive elements: the uranium, thorium, and actinium series, leaving out..the comparatively recently discovered neptunium series. 2006 C. Stringer Homo Britannicus vi. 221 Final proof that the art was ancient has come from uranium-series dating of cave flowstone covering parts of the stag.., giving an age of over 13,000 years. < as lemmas |
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