a beam of gamma radiation from a radium source, used in radiotherapy (now largely superseded by other isotopes).
| 单词 | θ13955 |
| 释义 | the world > health and disease > healing > medical treatment > treatment by radiation > [noun] > beam (1) radium beam1933 a beam of gamma radiation from a radium source, used in radiotherapy (now largely superseded by other isotopes). |
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