| 单词 | actinouranium |
| 释义 | actinouranium [´ak·tǝ·nō´yu̇`rā·nē·ǝm] NUCLEAR PHYSICS A naturally occurring radioactive isotope of the actinium series, emitting only alpha decay; symbol AcU; atomic number 92; mass number 235; half-life 7.1 × 108 years; isotopic symbol 235U. |
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