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reduction noun

  /ɹiˈdɑk.ʃən/ , /ɹɪˈdʌkʃən/
  • (mathematics) The rewriting of an expression into a simpler form.
 簡約
  • (chemistry) A reaction in which electrons are gained and valence is reduced; often by the removal of oxygen or the addition of hydrogen.
  • (computability theory) A transformation of one problem into another problem, such as mapping reduction or polynomial-time reduction.
 還元
armament reduction
軍縮
rapid reduction
急減
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