Physics. (Cf. stable, adj. 3d.)
| 单词 | θ79568 |
| 释义 | the world > matter > physics > atomic nucleus > radioactive isotope > radioactive nuclide > [adjective] > subject to spontaneous decay (2) unstable1904 Physics. (Cf. stable, adj. 3d.) Subcategories:— not (1) |
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