QCD =Quality Control Division 质量检查处[科]
qcd[ noun ]
a theory of strong interactions between elementary particles (including the interaction that binds protons and neutrons in the nucleus); it assumes that strongly interacting particles (hadrons) are made of quarks and that gluons bind the quarks together
<noun.cognition>
QCD \QCD\ (k[=u]"s[=e]*d[=e]"), n. (Physics)
Quantum chromodynamics. [abbrev.]
[PJC]