half-lives

英['hɑːfl'aɪvz] 美['hɑːfl'aɪvz]
  • 半衰期
  • century n.百年;世纪adj.百年的
  • half n.一半;下半场;半学年adj.一半的;不完全的adv.一半地;不完全地
    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。