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单词 fermi-dirac statistics
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WordReference Random House Unabridged Dictionary of American English © 2024
Fer′mi-Di•rac′ statis′tics  (fûr′mē də rak′),USA pronunciation [Physics.]
  1. Physicsquantum statistics defining the possible arrangements of particles in a given system in terms of the exclusion principle.
Also, Fer′mi statis′tics. Cf. fermion. 
  • named after English. Fermi and A. M. Dirac 1925–30

Collins Concise English Dictionary © HarperCollins Publishers::
Fermi-Dirac statistics n
  1. the branch of quantum statistics used to calculate the permitted energy arrangements of the particles in a system in terms of the exclusion principle
    Compare Bose-Einstein statistics
Etymology: 20th Century: named after Enrico Fermi and Paul Dirac
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