| 词汇 |
half life period |
| 释义 |
half life periodS 基本例句 n.半衰期亦作half dozen 核 用作名词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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