radioactive half-life
英
美
- 半衰期
双语例句
- 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。 - 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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