| 单词 | radium series |
| 释义 | > as lemmasradium series radium series n. = uranium series n. at uranium n. Compounds 2. ΘΚΠ the world > matter > physics > atomic nucleus > radioactive isotope > specific isotopes > [noun] > uranium uranium1902 uranium series1906 radium series1909 1907 Proc. Royal Soc. 80 56 The helium in radio-active minerals may always be attributed to the action of the uranium-radium series of transformations.] 1909 Science 28 May 866/2 The radium series of elements was not disclosed by the spectrum of the Spiral Nebula N. G. C. 1068. 1947 Nucleonics Dec. 44/1 The best source of radioactive lead is the decay product of the radium series, Pb 210 (RaD). 2013 Jrnl. Cleaner Production 60 79/2 The samples were..sealed in 100 ml. polyethylene jars for a minimum of 20 days (to allow radium series decay progeny to reach secular equilibrium). < as lemmas |
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