radium

/'reidiәm/

BNC频率: 45531

现代语料频率: 30174

高考英语大学英语四级大学英语六级

n. 镭

[化] 镭Ra

an ore of uranium and radium and vanadium

one (with her husband and Henri Becquerel) for research on radioactivity and another for her discovery of radium and polonium (1867-1934)

n the use of radium in radiation therapy

n a mineral consisting of uranium oxide and trace amounts of radium and thorium and polonium and lead and helium

a radioactive gaseous element formed by the disintegration of radium

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