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单词 quantum number
释义

WordReference Random House Unabridged Dictionary of American English © 2024
quantum num′ber, [Physics.]
  1. Physicsany integer or half of an odd integer that distinguishes one of the discrete states of a quantum-mechanical system.
  2. Physicsany number that distinguishes among different members of a family of elementary particles.
  • 1915–20

Collins Concise English Dictionary © HarperCollins Publishers::
quantum number n
  1. one of a set of integers or half-integers characterizing the energy states of a particle or system of particles. A function of the number multiplied by a fixed quantity gives the observed value of some specified physical quantity possessed by the system
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