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neutron

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neutron

Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++
Related topics: Chemistry, Physics
neu·tron /ˈnjuːtrɒn $ ˈnuːtrɑːn/ noun [countable] technical  HCHPa part of an atom that has no electrical charge 中子
Examples from the Corpus
neutronFirst, then, what about neutron decay?These stars would be supported by the exclusion principle repulsion between neutrons and protons, rather than between electrons.They were therefore called neutron stars.In another analytical method, neutron activation, an atomic reactor is used to bombard the mineral with fast-moving neutrons.Quarks unite to form protons, neutrons and electrons, which in turn unite to form atoms.Each U-235 nucleus that decays spontaneously emits two large but unequal fragments, plus several neutrons.Then they saw Jones' underground laboratory, the neutron spectrometer and its data, which were much more extensive than theirs.This is about a factor of 3 smaller than current best estimates of the neutron star radius.
Origin neutron (1900-2000) Probably from neutral
neu·tron nounChineseSyllable
that electrical charge an has Corpus part a atom no of


neutron
neutron /ˈnjuːtrɒn $ ˈnuːtrɑːn/ noun [countable] technical
 Date: 1900-2000
 Origin: Probably from neutral
a part of an atom that has no electrical charge


neu·tronBrE /ˈnjuːtrɒn/ 🔊NAmE /ˈnuːtrɑːn/ 🔊 noun (physics 物理) a very small piece of matter (= a substance) that carries no electric charge and that forms part of the nucleus (= central part) of an atom 中子   see also electron, proton

antiparticle, atom, electron, ion, neutron, nucleus, particle, positron, proton, valency