half
life
复数形式
half-lives
1
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
- 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。
- The half-life of a chemical reaction refers to the time it takes for the reactant concentration to decrease by half during a reaction.
化学反应的半衰期是指反应过程中反应物浓度减少一半所需的时间。
- The half-life of certain industrial pollutants can impact environmental cleanup efforts, as longer half-lives may result in persistent contamination.
某些工业污染物的半衰期可能会影响环境清理工作，因为较长的半衰期可能导致持续污染。
- The concept of half-life is applicable in fields such as pharmacology, geology, physics, and environmental science.
半衰期的概念适用于药理学、地质学、物理学和环境科学等领域。