单词	quantum chromodynamics
释义	quantum chromodynamics /krəʊməʊdʌɪˈnamɪks / (abbreviation QCD) plural noun [treated as singular] Physics A quantum field theory in which the strong interaction is described in terms of an interaction between quarks mediated by gluons, both quarks and gluons being assigned a quantum number called ‘colour’.Everyone agrees that the fundamental theory of the strong interaction is a quantum field theory known as quantum chromodynamics, or QCD for short.... Today the other three forces are described by the gauge theories of quantum chromodynamics and quantum electrodynamics, which together make up the Standard Model of particle physics. The theory of the strong interaction between quarks - quantum chromodynamics - is approximately invariant under what is called charge symmetry.
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