radiometric
🇺🇸
/ˌreɪdiəʊˈmetrɪk/
🇬🇧
/ˌreɪdiəʊˈmetrɪk/
adjective
R
involving the measurement of radiation, such as radioactivity, to determine the age of materials or the properties of objects
The geologist used radiometric dating to determine the age of the ancient rock layers.
地理學家使用放射性定年法來確定古老岩層的年齡。
translation
放射性測定