Either of two radioactive nuclides in the thorium series: mesothorium I (symbol MsThI), the isotope of radium with mass number 228, produced by the…
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| 释义 | the world > matter > physics > atomic nucleus > radioactive isotope > radioactive nuclide > [noun] > in thorium series (1) mesothorium1907 Either of two radioactive nuclides in the thorium series: mesothorium I (symbol MsThI), the isotope of radium with mass number 228, produced by the… |
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