英语词汇“carbon 14”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	carbon 14
释义	carbon 14 noun : a heavy radioactive isotope of carbon having the mass number 14 that is formed by the action of cosmic rays on nitrogen in the atmosphere and made artificially by bombardment of nitrogen compounds with neutrons and is valuable in tracer studies in chemistry and biology and in dating archaeological and geological materials — symbol C¹⁴ or ¹⁴C — called also radiocarbon
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