“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	planing of urban fire control planisphere planispheric astrolabe planitia Planitia Descensus planitron planizer plank Plank function Plank Road Remains at Sanmenxia Plank's law plankton plankton community plankton sampler planktothrix agardhii virus plan law planned capacity of thermal power plant planned commodity abolishment planned ecological industrial park model planned economic system planned maintenance Planned Obsolescence planned population migration planned preventive maintenance system planned price of agricultural products

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