the excess of the number of neutrons in an atomic nucleus over the number of protons.
| 单词 | θ79171 |
| 释义 | the world > matter > physics > atomic physics > particle physics > particle participating in strong interaction > baryon > [noun] > neutron > excess of neutrons over protons (1) neutron excess1941 the excess of the number of neutrons in an atomic nucleus over the number of protons. |
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