Chemistry and Physics. A particular kind of molecule, ion, free radical, etc.; a distinct kind of atom (esp. a radioactive one) or subatomic particle.
| 单词 | θ79328 |
| 释义 | the world > matter > physics > atomic physics > [noun] > minute quantity of matter > kind of (1) species1895 Chemistry and Physics. A particular kind of molecule, ion, free radical, etc.; a distinct kind of atom (esp. a radioactive one) or subatomic particle. |
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