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
The half-life of a radioactive isotope determines the time it takes for half of the initial amount to decay into a stable product.
放射性同位素的半衰期决定了初始量的一半衰变成稳定产物所需的时间。
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。
