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单词 francium
释义

francium

听听怎么读
英 [?fr?nsi?m]
美 [?fr?nsi?m]
是什么意思
  • n.

    (放射性元素)钫(符Fr);

  • 英英释义

    francium[ 'fr?nsi?m ]

    • n.a radioactive element of the alkali-metal group discovered as a disintegration product of actinium

      同义词:Fratomic number 87

    学习怎么用

    权威例句

    Francium
    francium
    francium
    Lifetime measurements of the 7 p levels of atomic francium
    Spectroscopy with trapped francium: advances and perspectives for weak interaction studies
    Hyperfine anomaly measurements in francium isotopes and the radial distribution of neutrons
    Enhancement factor for the electron electric dipole moment in francium and gold atoms
    Calculation of energy levels, E1 transition amplitudes, and parity violation in francium
    SCF Hartree-Fock results for elements with two open shells and the elements francium to nobelium ☆
    Relativistic many-body calculations of the hyperfine-structure intervals in caesium and francium atoms
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