(a) the isotope lead-206; = radium G n. at radium, n. 1b; (b) attributive (uranium-lead) designating a method of isotopic dating of rock based on…
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| 释义 | the world > matter > physics > atomic nucleus > measurement of ionizing radiation > [adjective] > using isotopic dating (1) uranium lead1914 (a) the isotope lead-206; = radium G n. at radium, n. 1b; (b) attributive (uranium-lead) designating a method of isotopic dating of rock based on… |
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