†(a) = radiotellurium n. (a) (obsolete); (b) any radioactive isotope of bismuth.
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| 释义 | the world > matter > physics > atomic nucleus > radioactive isotope > specific isotopes > [noun] > polonium (3) radiobismuth1903 †(a) = radiotellurium n. (a) (obsolete); (b) any radioactive isotope of bismuth. radiotellurium1903 †(a) an isotope of polonium (polonium-210, originally thought to be tellurium), which occurs in the radium decay series and decays by alpha emission… Subcategories:— as power source (1) |
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