| 单词 | radioisotope |
| 释义 | radioisotope —radioisotopic /ray'dee oh uy'seuh top"ik/, adj. /ray'dee oh uy"seuh tohp'/, n. a radioactive isotope, usually artificially produced: used in physical and biological research, therapeutics, etc. [1940-45; RADIO- + ISOTOPE] |
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