“roentgenium”的概念、定义、翻译、参考文献-科学参考

单词	roentgenium
释义	roentgenium Encyclopedia 理学放射性元素释 roentgenium𬬭人工放射性元素，元素符号Rg，原子序数111，半衰期最长的同位素的质量数282。属周期系ⅠB族。为纪念德国物理学家W.K.伦琴[注]而命名。曾被称为111号元素（unununium），符号Uuu。
随便看	principal sheet principal solution principal space principal spectrum principal sphere principal sphere of curvature principal square root principals' research leadership principal state model principal state of polarization principal's teaching leadership principal strain principal subgroup principal subgroup series principal submatrix principal submodule principal subspace principal surface principal symbol principal symbol sequence principal system principal tangent principal tangent bundle principal telescope principal term

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