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carbon dating 【考古】碳14年代測定(法)。

carbon filament

Well , the hopis let them take a little piece , and they checked by the carbon dating method . they found these tablets were at least 10 , 000 years old , maybe 50 , 000 所以霍皮族人就讓他們帶一小塊回去,他們用炭同位素測定法來測定,發現這石頭至少有一萬年之久,或五萬年。

For decades , archaeologists have used a technique called carbon dating to work out how old their finds are 幾十年來,考古學家已經用名為碳年代測定的方法計算出他們所發現文物的時間。