Physics. Not involving the emission of alpha particles, beta particles, or gamma rays; not emitting such radiation. Now historical.
| 单词 | θ79496 |
| 释义 | the world > matter > physics > atomic nucleus > radioactivity > [adjective] > not emitting rays (1) rayless1904 Physics. Not involving the emission of alpha particles, beta particles, or gamma rays; not emitting such radiation. Now historical. |
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