柯林斯詞典radiocarbon /?re?d????kɑ?b?n/ 1. N-UNCOUNT Radiocarbon is a type of carbon that is radioactive, and which therefore breaks up slowly at a regular rate. Its presence in an object can be measured in order to find out how old the object is. 放射性碳[usu N n] The most frequently used method is radiocarbon dating. 最常用的方法是放射性碳定年法。 返回 radiocarbon