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half life time

英 美
  • 半衰期

双语例句

    1. The time it takes for half of its original amount to decay is called the half-life.
      衰变至只剩下原来数目一半所需的时间称为该核素的半衰期。
    2. It is not necessary to wait until half of a sample has decayed in order to measure the halflife.
      不必一直等到样品衰变一半之后才测量它的半衰期。

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