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1. Oxford American Dictionary

   carbon-14

   • IPA[ˌkärbənfôrˈtēn]

   美式

   • n.
     a long-lived naturally occurring radioactive carbon isotope of mass 14, used in carbon dating and as a tracer in biochemistry.

   • noun: carbon-14

2. • 相關詞

   Derby, 14th Earl of

   • ph.
     (1799–1869), British Conservative statesman, prime minister 1852, 1858–9, and 1866–8; born ...

   Oxford Dictionary

   Derby, 14th Earl of

   • ph.
     (1799–1869), British statesman; prime minister 1852, 1858–59, and 1866–68; born Edward George ...

   Oxford American Dictionary

3. • 更多解釋

   carbon-14

   • n.
     a long-lived naturally occurring radioactive carbon isotope of mass 14, used in carbon dating ...

   Oxford Dictionary