1.N-UNCOUNTRadiocarbon 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] [1]
Naturally occurred radiocarbon (14 C), as a powerful tool, has been used for decades for archeological and geological dating. Recent development and applications of Accelerator Mass Spectrometry (AMS) have made it possible to detect 14 C …