Half-life
01
半衰期, 半寿期
the time required for half of a quantity of a substance to undergo a change or decay, typically in the context of radioactive decay or chemical reactions
例子
Carbon-14, with a half-life of around 5,730 years, is used in radiocarbon dating to estimate the age of archaeological artifacts.
碳-14的半衰期约为5,730年，用于放射性碳定年法以估计考古文物的年龄。
