放射性元素 fàngshèxìngyuánsù radioactive element Definitions Defs Origin Strokes Stroke Words Sentences Sents 放射性元素 fàngshèxìngyuánsù radioactive element An element composed of radioactive isotopes that can spontaneously emit radiation, such as radium, uranium, or thorium.
放射性元素 fàngshèxìngyuánsù radioactive element An element composed of radioactive isotopes that can spontaneously emit radiation, such as radium, uranium, or thorium.
