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单词 decay
释义

decay /di-kāˈ/

intransitive verb
  1. To fall away from a state of health or excellence
  2. To waste away
  3. To decompose, rot
  4. (of eg magnetism, radioactivity) to decrease in strength as the source of energy is removed
transitive verb
  1. To cause to waste away
  2. To impair
noun
  1. A falling into a worse or less perfect state
  2. A wearing away
  3. Rotting
  4. Bad or rotten matter (eg in a tooth)
  5. Loss of fortune
  6. Ruin, downfall (obsolete)
  7. Disintegration of a radioactive substance
ORIGIN: OFr decair, from L from, and cadere to fall

decayedˈ adjective

  1. Rotten
  2. Reduced in circumstances, impoverished

decay heat noun (nuclear eng)

The heat produced by the radioactive decay of fission products formed in a nuclear reactor

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更新时间:2024/9/22 1:53:12