| 单词 | even-even |
| 释义 | > as lemmaseven-even even-even adj. Physics designating a nucleus in which the numbers of protons and neutrons are both even. ΚΠ 1940 Physical Rev. 58 104/1 States with higher angular momenta of the core alone (an even-even nucleus) are known in many cases to be very close to the normal state. 1975 Proc. Royal Soc. A. 342 54 For even-even nuclei, the value of N − Z is equal to the number of neutrons not paired with protons. 2014 D. Page et al. in Novel Superfluids II. xxi. 507 A nucleon in even-even nuclei, whether neutron or proton, clearly requires a minimum energy for excitation. < as lemmas |
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