isotope
US /ˈaɪ.sə.toʊp/
UK /ˈaɪ.sə.təʊp/
名词
同位素
each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.
示例:
•
Carbon-14 is a radioactive isotope of carbon.
碳-14是碳的一种放射性同位素。
•
Scientists use different isotopes to date ancient artifacts.
科学家使用不同的同位素来测定古代文物的年代。