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。
The archaeologists said in the statement that radio-carbon dating put the construction of the circle of bluestones at between 2,400 B.C. and 2,200 B.C., a few centuries later than originally thought.
考古学家在一份声明中说，经放射性碳测年法鉴定，环形巨石阵应该建造于公元前2400年至公元前2200年之间，比之前的推测晚了几百年。
The user listens to regular radio broadcasts that flow directly from a carbon nanotube transistor to a pair of headphones or speakers.
用户可以通过一副耳机或扬声器收直接听来自碳纳米管晶体管的正规无线电广播。
Carbon fibre radio tray is standard along with polished aluminium front and rear chassis braces.
碳纤维电台托盘标准是随着抛光铝前方和后方，底盘牙套。
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