| 单词 |
radioactinium |
| 释义 |
radioactinium
radioactinium[¦rād·ē·ō·ak′tin·ē·əm] (nuclear physics) Conventional name for the isotope of thorium which has mass number 227 and is in the actinium series. Symbolized RdAc. radioactinium
radioactinium (rā″dē-ō-ăk-tĭn′ē-ŭm) A radioactive product formed from disintegration of the element thorium. |
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